A Chicago police officer and a crime suspect were killed Monday night by a "rapid fire" burst of gunfire that erupted during a traffic stop in Chatham, police said. The 26-year-old officer, Enrique Martinez, was pronounced dead at 8:14 p.m. at the University of Chicago Medical Center, only minutes after the shooting, according to the Cook County medical examiner's office. Officer Martinez was a "hero" who was "working to make this city safer," according to a Facebook post from the Fraternal Order of Police. He had his whole life and career ahead of him, the union representing Chicago's rank-and-file officers said."Tonight, tomorrow and for eternity, we honor his sacrifice! Rest easy hero. We'll hold the line from here," the union added.During a news conference outside the hospital late Monday, Chicago Police Supt. Larry Snelling said Martinez "was a proud individual, very hard working, and he gave his life for this city."The slain Gresham District officer would have marked three years on the job in December.The attack unfolded after officers stopped a vehicle with three occupants about 8 p.m. in the 8000 block of South Ingleside, Snelling said. As officers approached the vehicle, one of the occupants opened fire on Martinez. "It sounded like rapid fire,” Snelling said. The officer was struck multiple times, the superintended added. One of the occupants of the vehicle, who remained unidentified, was also killed by the gunfire. Dozens of police stand vigil outside University of Chicago Medical Center in Hyde Park, where a fellow officer who was wounded on duty was taken.Emmanuel Camarillo/Sun-Times The shooter ran from the vehicle after trying and failing to drive away, Snelling said. He was taken into custody after a brief foot chase and search of the area. The third person in the vehicle, who was in the back seat, was also arrested.Police rushed Martinez to the University of Chicago Medical Center in Hyde Park, where he was pronounced dead, Snelling said.Officers recovered a handgun on the occupant of the vehicle who was fatally shot, Snelling said. Officers also recovered a semiautomatic weapon with an extended magazine on the scene.Snelling said one officer opened fire, and the Civilian Office of Police Accountability confirmed it was investigating.The shooting was captured on frantic police dispatches that were at times drowned out by screaming and radio interference. “We are transporting one [police officer] to the University of Chicago, he is struck,” another officer said. “… Block the streets!”Police reported to a dispatcher that the two surviving suspects tried to flee in a damaged Ford Explorer, leaving the other suspect dead at the scene of the shooting. The front seat passenger was armed with an “automatic weapon,” an officer said over the radio. Minutes before the shooting, a woman reported that she had shot and wounded someone who tried to break into her Kia Sol in the 8200 block of South Ingleside Avenue, two blocks south of the deadly attack on police. An officer later reported over the radio that the shooting wasn’t “bonafide,” indicating that a gunshot victim wasn’t found.‘We cannot allow people to continue to wreak havoc’Officers both in and out of uniform gathered outside the hospital late Monday night. Some were seen embracing each other, while others were heard shouting.Mayor Brandon Johnson told reporters gathered there that Martinez “courageously protected this city," calling on city residents to pray for his family and embrace the police department.“This tragic loss cuts deep, the wound is severe,” Johnson said. “The only way we’ll get through this tragic loss is if we put our arms around one another and recognize the value, the bravery of our police department, who put their lives on the line for us every day.”Snelling stressed that members of the department "face this type of danger every single day.” “This work is unpredictable and we never know what’s in store for our officers when they’re out there tying to keep the public safe," Snelling said. "And just remember in a city where our officers are not safe it’s going to be hard for everyone else to be safe.”He noted that one of the suspects had recently cut off an electronic monitoring bracelet.“When we know that we have repeat offenders, people that continue to offend, we have to stop that," Snelling said. "We cannot allow people to continue to wreak havoc on this city, to victimize people with violent crimes, robberies, shootings."