LEWISTON – Police on Friday arrested a third suspect in an armed invasion of a South Main Street apartment the night before.

Meanwhile, an investigation into the Thursday night robbery resulted in another drug arrest as police seized more marijuana from the building at 25 South Main St. Investigators said they found drugs, cash and assault weapons when they searched a first-floor apartment there.

Tyler Bryant, 20, of Auburn, was charged Friday with attempted robbery and reckless conduct after police linked him to the home invasion.

Investigators said Bryant was one of three people who went to South Main Street with a rifle and fired at least four shots at about 6 p.m. Thursday.

No one was struck by the gunfire but Yusuf Mohamoud, 18, of Lewiston, was charged in the shooting shortly after it was reported.

A 17-year-old Auburn boy was also arrested at the scene and police said they found an assault rifle in his car.

Later Thursday, police charged 39-year-old Lawrence Coy, the alleged victim of the robbery, with cultivating marijuana. That charge came about when officers searched Coy’s apartment and said they found evidence that pot was being grown there.

On Friday, the investigation broadened.

Late in the afternoon, Auburn police were joined by drug agents and officers from the Maine Warden Service as they searched a first-floor apartment at the South Main Street building.

According to Auburn deputy police Chief Jason Moen, officers recovered 65 pot plants, a half-pound of processed marijuana and associated paraphernalia.

Police said they also found eight weapons with ammunition, including a 9-mm handgun and an AK-47 assault rifle.

The man who lives in the apartment, 20-year-old David Rivard, was charged with aggravated cultivation of marijuana, possession of scheduled drugs and illegal importation of wildlife.

Police said the latter charge stemmed from a water monitor – a lizard that can grow to up to 3 feet – found inside Rivard’s home.

Rivard was taken to the Androscoggin County Jail where he was being held late Friday on $10,000 cash bail.