Houston had just arrived at the transit center on a bus. The district attorney said before the shooting took place, Houston was treated with Narcan, a drug used to revive people suffering from a drug overdose, the Post Crescent reported.

“We lost one of our own and officers were forced to make difficult decisions and risked their lives to protect our community,” Tempelis said Thursday.

Tempelis described a scene that quickly changed from a routine medical call to a chaotic, dangerous situation with multiple shots being fired by Houston and by officers trying to deal with the threat he posed.

“It is surprising that nobody else got hurt or killed as a result of the gunfire and the behavior of (Houston),” she said.

When the bus arrived at the transit center, a bus passenger thought Houston was having a seizure and called 911 for help. Lundgaard arrived with other firefighters and began providing aid to Houston.

Houston regained consciousness after responders determined he likely had suffered a drug overdose and gave him two doses of Narcan.

Houston told responders he had taken some of his wife’s morphine. Houston got off the bus on his own, even as responders were encouraging him to seek additional medical care, but he refused.