Police said a man started a fire to lure firefighters to a Long Beach retirement home where a shooting left a fire captain dead and another firefighter injured, the Associated Press reported.

Dave Rosa, 45, a 17-year veteran who served as captain with the Long Beach Fire Department for the past 6 1/2 years, died Monday after being shot at the Covenant Manor, according to police. Ernesto Torres, a 35-year-old who has been with the Fire Department for more than a decade, was hurt but expected to make a full recovery after being discharged from the hospital, the agency said.

The two were among the firefighters who responded to a report of a fire alarm at the senior living facility at around 3:49 a.m. on Monday. Officials said after the crew quickly suppressed the fire, gunfire erupted and struck Rosa and Torres.

A resident at the retirement home was also shot and wounded, officials said. That person was last listed in critical but stable condition.

Later on Monday morning, police said they recovered a revolver and arrested Thomas Kim, a 77-year-old resident at Covenant Manor.

He was arrested on suspicion of murder, two counts of attempted murder and arson, Long Beach police Chief Robert Luna said.

“Preliminary evidence and witness statements” indicate that Kim set the fire with the purpose of bringing firefighters to the building, Luna said at a Monday afternoon news conference. The chief also said police were still investigating whether the fire was a set up.

The Associated Press cited “police” and “authorities” in its report that the suspect set the blaze to lure firefighters in order to shoot them.

A bomb squad also responded to the scene after two suspicious devices were found, the chief said. Luna did not describe the nature of those devices.

Authorities provided no further information about a motive behind the incident, which Luna referred to as a “puzzle.”

“We have a lot of questions about the devices that were found and the suspect’s intent, which we do not have a full picture of yet,” Luna said.