San Antonio Independent School District Police Department (ISDPD) are mourning the death of one of their officers after he was murdered in the line of duty early on Saturday morning, Dec. 21.

The incident happened at about 3 a.m. when Detective Cliff Martinez, a 28-year veteran with SAISD, was working an off-duty security job as a security guard at an IHOP restaurant on Hot Wells Road, KENS reported.

When a fight broke out between two men inside the restaurant, the 50-year-old detective managed to get the suspects out of the restaurant, at least two of them attacked him, knocking him to the ground in the parking lot.

The suspects then jumped into a vehicle and intentionally ran over the injured detective, leaving him pinned beneath the car.

The suspects fled the scene on foot shortly after.

Martinez was wearing his radio at the time of the assault, and managed to call for help, WOAI reported.

Martinez died of his injuries at the scene.

The suspects identified as 29-year-old Alfredo Martinez and 23-year-old Jorge Lopez, KSAT reported.

Lopez was behind the wheel of the vehicle that ran over Martinez, reversed over him and drove over him again.

Both have been arrested on capital murder charges.

“This was a case where people were anxious to provide officers with information when we arrived there and that led to the arrest of this suspect,” San Antonio Police Officer Doug Green said. “He was doing his due diligence, and unfortunately it cost him his life.”

The San Antonio Independent School District (ISD) said that Martinez was a “highly-respected member” of the district’s police force.

“SAISD is deeply saddened to learn of the death of our Detective Cliff Martinez early this morning while working off-duty at an I-HOP,” the school district said, according to KENS. “He will be greatly missed. Our thoughts are with his family and friends during this difficult time.”

IHOP San Antonio said Martinez was a security guard for “many years.”

“The entire IHOP family joins the San Antonio community in mourning the tragic loss of Detective Cliff Martinez,” IHOP San Antonio franchisee Hakim Group said in a statement. “He will forever be remembered for his care and dedication to protecting others and our thoughts are with the Martinez family during this heartbreaking time.”

The company has also vowed to match up to $30,000 in donations made to a fundraising campaign established to help the family of the murdered detective.