The Chicago Police Department is mourning two of its officers who were hit and killed by a train while chasing a suspected gunman Monday night, officials said.
Eduardo Marmolejo, 36, and Conrad Gary, 31, were chasing the suspect around 6 p.m. when they were hit by a train that may have been traveling 70 mph, Chicago Police Superintendent Eddie Johnson told reporters.
The officers, both fathers of young children, died at the scene, Johnson said.
The two officers were killed "doing the most dangerous thing any police officer can do, and that is to chase an individual with a gun," Johnson said.
Bodycam video showed the officers get out of their car, head up to the tracks and talk about where the suspect may have gone, police said, according to ABC Chicago station WLS-TV.
One loud train approached, which may have masked the sound of a second train, police said, according to WLS. Then the camera went to black, WLS said.
A suspect was apprehended and a weapon was recovered, police said.
"These brave young men were consumed by identifying a potential threat to their community and put the safety of others above their own," Johnson said.
Gary had been on the force for 18 months and Marmolejo for two years, Chicago Police Department officials said.
Our city’s heart is broken once again as we grieve two courageous souls that were lost last night protecting the innocent. PO Conrad Gary and PO Eduardo Marmolejo #RIP #ChicagoPolice @ChicagoCAPS05 pic.twitter.com/AR4WUWHscV— Tom Ahern (@TomAhernCPD) December 18, 2018
Gary was a married father of an infant while Marmolejo was a married father of three children, WLS reported.
"We are all mourning the loss of our extended family," Chicago Police officials told ABC News via email. "However, our officers continue to protect and serve their communities, even in the most difficult of circumstances."
"This knocks you back on your heels," Chicago Mayor Rahm Emanuel told reporters.
"There are no words to express our grief, our sense of loss," Emanuel said. "We as a city have to measure up and remind them, they're part of our family."
Gary and Marmolejo's deaths are the third and fourth for the Chicago Police Department this year.
In November, Chicago police officer Samuel Jimenez was fatally shot in the neck while trying to protect employees and patients during a shooting at Chicago's Mercy Hospital.
In February, Chicago police Cmdr. Paul Bauer was shot and killed. Bauer, survived by his wife and daughter, had been sitting in his squad car when heard a call over the radio and pursued a gunman on foot.
The mayor on Tuesday urged Chicago residents to show the police department that it has "your support."
"When you think about Commander Bauer, officer Jimenez, you think now about Eduardo [and] Conrad," he said. "The Chicago Police Department needs the family of Chicago. ... We have a responsibility today to show up for them."
Other police departments have been offering their condolences for the latest slain Chicago officers, who were members of the department's fifth district.
Procession is approaching the @ChicagoCAPS05 5th District station where fellow officers will pay final respects and family members will join in the procession to the Medical Examiner pic.twitter.com/2ij52XqJV9— Anthony Guglielmi (@AJGuglielmi) December 18, 2018
Our thoughts and prayers are with the family, friends, and Chicago Police Department colleagues of Officers Conrad Gary and Eduardo Marmolejo who gave their lives in the line of duty last night protecting the citizens of Chicago. pic.twitter.com/MDyu4IgkDj— Oak Lawn EMS-Fire-Rescue (Official) (@OLEMSFIRERESCUE) December 18, 2018
Today our thoughts and prayers are with the @Chicago_Police Department and the friends and families of Officers Conrad Gary and Eduardo Marmolejo who were killed in the line of duty yesterday while searching for a suspect.— NJSP - State Police (@NJSP) December 18, 2018
Godspeed brothers. #GoneButNotForgotten #ThinBlueLine pic.twitter.com/BvbyCtihdA
We offer our sincere condolences to the @Chicago_Police on the tragic loss of Officers Conrad Gary and Eduardo Marmolejo. Our thoughts and prayers are with CPD, Supt. Johnson and the families. @pcm_chicago pic.twitter.com/QyJRNy7817— Chief James Kruger (@chiefkruger) December 18, 2018
The members of the 19th District stand with our colleagues in the @ChicagoCAPS05 th District at this terrible time. Our condolences to the families and friends of Officer Eduardo Marmolejo and Officer Conrad Gary. RIP Brothers. pic.twitter.com/C70yLF6Y8k— Chicago Police 19th Dist - Town Hall (@ChicagoCAPS19) December 18, 2018
The 25th District would like to send our condolences to all the men and women of the 5th District. May you find comfort in this very sad time. Rest In Peace Officers Eduardo Marmolejo and Conrad Gary.— Chicago PD 25th District (@CPD25thDistrict) December 18, 2018
Commander Anthony J. Escamilla & the 025 District.