A Cambridge police officer has been placed on administrative leave after allegedly hitting a female bicyclist while off duty and fleeing the scene around 7:49 p.m. Sunday at the intersection of Broadway and Portland Street.

The victim, a 32-year-old Cambridge woman, was discharged from the hospital Monday evening, a day after the crash that left her with non-life-threatening injuries to her back and head, according to Jeremy Warnick, director of communications for the Cambridge Police Department.

Charges, if any, will be determined after an investigation, which includes reconstruction of the crash with the help of the State Police and Middlesex District Attorney's Office, said Warnick. The officer will only be identified if charges are filed against him, like any other case, Warnick said.

There were reportedly multiple witnesses at the scene of the crash. The off-duty cop was caught after one of the witnesses called in his license plate number. He had not turned himself in at the time of the report, so officers went to his home and took away his car as evidence, Warnick said.

The department placed the officer on paid leave, taking away his badge and gun pending a complete investigation, which is expected to be completed this week.

“We have people working on this exclusively,” said Warnick on Tuesday afternoon. “The very earliest [for the investigation to be finished] could be [Wednesday]. Some of these do take some time. We’re going to speak to the victim again, the witnesses. Go through any property, evidence, etc. … We'll release more details as the investigation progresses.”

A delay is that one of the witnesses is out of state, Warnick said.

When asked whether the DA's Office and State Police are usually involved with non-fatal hit-and-run investigations, or whether the agencies were brought in to prevent any conflicts of interest, Warnick said part of the reason was that the police department doesn't want "bias to play a role whatsoever" in the investigation.

"With the allegations made in this case, we requested the support of the District Attorney’s Office and State Police to ensure a fair and balanced investigation," Warnick said.

When asked if the officer was under the influence of alcohol during the crash, Warnick said, "That's a key component we're looking to discuss with the officer, and we're also looking to speak with witnesses and the victim."