WATERVILLE — A Brunswick man is charged with robbery and aggravated assault after allegedly punching and strangling a woman outside a Waterville residence early Saturday morning, stealing her purse and fleeing, police said.

Carl Langston, 27, was arrested by Brunswick police around 9:45 p.m. Saturday on River Road in Brunswick, said Deputy Chief Charles Rumsey.

The woman reported the robbery around 4:30 a.m. Saturday on Oak Street, Rumsey said. She reported being with Langston when he suddenly attacked her by punching her on the side of the head and choking her, Rumsey said, before grabbing her purse, jumping into his car and fleeing.

He said the two were acquaintances, but did not know each other well. The purse contained the woman’s identification, miscellaneous items and about $500 in cash, Rumsey said.

Langston was taken to the Cumberland County Jail in Portland after his arrest and is charged with class A felony robbery and class B felony aggravated assault. He was also on probation at the time for charges out of southern Maine and was issued a probation hold, Rumsey said.

Langston is scheduled to appear in Kennebec County Superior Court in Augusta on April 19 at 8:30 a.m.

The woman was taken to the Waterville Police Department to make a statement to detectives and was treated by emergency medical workers at the police station.

The robbery was the first of two reported over the weekend and police are still investigating a report made by a woman who said that she had taken a cab from Augusta to Waterville with a man she met at a bar in Augusta.

The woman said the pair was dropped off near Hannaford supermarket on Kennedy Memorial Drive around 1 a.m. Sunday, where, she said, the man robbed her of about $100 cash and a package of cigarettes and fled on foot. She then walked up the road to J&S Oil, where she called police.

Rumsey said the two robbery reports are not related and police are working to contact the woman who reported the second case to “clear up some inconsistencies.”

He said a tracking dog was called to the scene of the second reported robbery in an attempt to locate the suspect but the search was not successful.

Rachel Ohm — 612-2368

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Twitter: @rachel_ohm