The Latest on the investigation of a woman believed to have posed a threat to schools in Colorado (all times local):

9:20 a.m.

Colorado schools that were shuttered just ahead of the 20th anniversary of the Columbine school shooting have reopened, a day after authorities found the body of a young Florida woman who was obsessed with the shooting. Many schools imposed increased security measures when they reopened on Thursday.

A lone bicycle stands in the rack outside East High School, Wednesday, April 17, 2019, in Denver. Denver-area public schools closed Wednesday as the FBI hunted for an armed young Florida woman who was allegedly
A lone bicycle stands in the rack outside East High School, Wednesday, April 17, 2019, in Denver. Denver-area public schools closed Wednesday as the FBI hunted for an armed young Florida woman who was allegedly “infatuated” with Columbine and threatened violence just days ahead of the 20th anniversary of the attack. (AP Photo/David Zalubowski)

The FBI said the body of Sol Pais was discovered Wednesday in mountains outside Denver with what appeared to be a self-inflicted gunshot wound.

Columbine and dozens of other schools were closed Wednesday because of fears that Pais posed a threat. About 500,000 students in the area that includes metropolitan Denver and Colorado Springs were affected.

Authorities say Pais never threatened a specific school but made troubling remarks to others about her “infatuation” with the 1999 shootings. The FBI also says Pais purchased a shotgun immediately after arriving in Colorado on Monday.

Doors are locked at North High School, Wednesday, April 17, 2019, in Denver. Denver-area public schools closed Wednesday as the FBI hunted for an armed young Florida woman who was allegedly
Doors are locked at North High School, Wednesday, April 17, 2019, in Denver. Denver-area public schools closed Wednesday as the FBI hunted for an armed young Florida woman who was allegedly “infatuated” with Columbine and threatened violence just days ahead of the 20th anniversary of the attack. (AP Photo/David Zalubowski)

The school closures affected about 500,000 students.

Events planned to mark the anniversary of the 1999 Columbine attack will go on as scheduled throughout the week, including a ceremony near the school on Saturday.

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Investigators head into the forest along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)
Investigators head into the forest along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)

11:10 p.m.

Authorities want to ensure that a Florida teenager who was obsessed with the Columbine school shooting was acting alone as dozens of Denver-area schools plan to reopen following a region-wide hunt for the young woman.

The FBI said the body of Sol Pais was discovered in the mountains outside Denver with what appeared to be a self-inflicted gunshot wound on Wednesday, about 24 hours after Columbine and other schools locked their doors in response to fears that she intended to carry out her own attack.

Investigators head into the forest along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)
Investigators head into the forest along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)

Authorities say Pais never threatened a specific school but made troubling remarks to others about her “infatuation” with the 1999 shootings. The FBI also says Pais purchased a shotgun immediately after arriving in Colorado on Monday.

The anniversary of the Columbine attack is Saturday.

Investigators head into the forest along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)
Investigators head into the forest along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)
Echo Lake Lodge sits closed for the season along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)
Echo Lake Lodge sits closed for the season along Mount Evans Road Wednesday, April 17, 2019, near Idaho Springs, Colo. (AP Photo/David Zalubowski)
A woman walks across an empty parking lot a Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A woman walks across an empty parking lot a Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A police officer walks to the front doors of Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A police officer walks to the front doors of Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A patrol car is parked in front of Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A patrol car is parked in front of Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A patrol car is parked in front of Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
A patrol car is parked in front of Columbine High School, Wednesday, April 17, 2019, in Littleton, Colo. (AP Photo/Joe Mahoney)
Members of an Alpine Rescue Team carry out the body of 18-year-old Sol Pais, near Echo Lake Campground in Arapaho National Forest, Wednesday, April 17, 2019, in Idaho Springs, Colo. (RJ Sangosti/The Denver Post via AP)
Members of an Alpine Rescue Team carry out the body of 18-year-old Sol Pais, near Echo Lake Campground in Arapaho National Forest, Wednesday, April 17, 2019, in Idaho Springs, Colo. (RJ Sangosti/The Denver Post via AP)
Members of an Alpine Rescue Team carry out the body of 18-year-old Sol Pais, near Echo Lake Campground in Arapaho National Forest, Wednesday, April 17, 2019 in Idaho Springs, Colo. (RJ Sangosti/The Denver Post via AP)
Members of an Alpine Rescue Team carry out the body of 18-year-old Sol Pais, near Echo Lake Campground in Arapaho National Forest, Wednesday, April 17, 2019 in Idaho Springs, Colo. (RJ Sangosti/The Denver Post via AP)
Surfside Chief of Police Julio Yero, second from right, speaks with investigators outside the home of Sol Pais, Wednesday, April 17, 2019, in Surfside, Fla. (Al Diaz/Miami Herald via AP)
Surfside Chief of Police Julio Yero, second from right, speaks with investigators outside the home of Sol Pais, Wednesday, April 17, 2019, in Surfside, Fla. (Al Diaz/Miami Herald via AP)
Surfside Chief of Police Julio Yero speaks to the media outside the home of Sol Pais, Wednesday, April 17, 2019, in Surfside, Fla. (Al Diaz/Miami Herald via AP)
Surfside Chief of Police Julio Yero speaks to the media outside the home of Sol Pais, Wednesday, April 17, 2019, in Surfside, Fla. (Al Diaz/Miami Herald via AP)
Alberto M. Carvalho, Superintendent of Miami-Dade County Public Schools, listens during press conference at Miami Beach High School, Wednesday, April 17, 2019, in Miami Beach, Fla. (Al Diaz/Miami Herald via AP)
Alberto M. Carvalho, Superintendent of Miami-Dade County Public Schools, listens during press conference at Miami Beach High School, Wednesday, April 17, 2019, in Miami Beach, Fla. (Al Diaz/Miami Herald via AP)
FBI agent in charge Dean Phillips talks to reporters in Denver Wednesday, April 17, 2019. A Florida teenager who authorities say was obsessed with the 1999 Columbine school shooting and may have been planning an attack in Colorado just ahead of the 20th anniversary was found dead Wednesday in an apparent suicide after a nearly 24-hour manhunt. (Colorado Public Radio via AP)
FBI agent in charge Dean Phillips talks to reporters in Denver Wednesday, April 17, 2019. A Florida teenager who authorities say was obsessed with the 1999 Columbine school shooting and may have been planning an attack in Colorado just ahead of the 20th anniversary was found dead Wednesday in an apparent suicide after a nearly 24-hour manhunt. (Colorado Public Radio via AP)

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