A large team has been assembled in Weld County to investigate a perplexing officer-involved shooting that’s raising questions about the involvement of an off-duty Adams County sheriff’s deputy who remains in critical condition after being shot by a LaSalle police officer.

Ten detectives and investigators, six crime-scene analysts and technicians, and a staff of supervisors are trying to sort out what happened, and why, Wednesday night following a high-speed chase that ended outside Evans, Greeley police Sgt. Joe Tymkowych said Friday.

There are still many questions to be answered about the bizarre circumstances, partly because authorities haven’t yet heard the deputy’s version of events, as he remained in intensive care in critical condition Friday.

What detectives do know is that the Adams County sheriff’s deputy — who has not been publicly identified — was not doing police work when he and a second suspect raced through rural Weld County going more than 90 mph late Wednesday night, Tymkowych said.

“He was not in the performance of his official duty. He was not in a marked patrol car. There was no legitimate pursuit,” he said.

Police from multiple agencies began pursuing the two vehicles around 10:25 p.m. Wednesday outside Platteville. They were able to stop the car driven by the Adams County deputy near 42nd Street and Highway 85, outside Evans, according to Greeley police.

It was there that the LaSalle officer — who also has not been publicly identified — shot the off-duty deputy. Investigators have not given any indication as to what transpired that led the LaSalle officer to fire his weapon.

Detectives have served a search warrant on the deputy’s car and are analyzing any possible evidence that might clarify what happened. Tymkowych said he could not say whether investigators found a gun or anything illegal inside the car.

Police are not identifying the vehicle that the deputy or the second suspect, who has not been arrested, were driving during what they say was either a chase or a street race. No charges have been filed against the deputy or the other suspect, Tymkowych said.

So far, authorities only have the second suspect’s version of what happened Wednesday night.

“It’s still pretty early in the investigation,” Tymkowych said.