A man suspected of robbing convenience stores at gunpoint in Medford and Somerville was arrested Wednesday, police said.
Video surveillance captured of the robbery in Somerville spread through the news media and social media Monday, leading to tips that Jonathan Williams, 31, of Revere was the suspect, Somerville Police Chief Tom Pasquarello said in a statement. He was arrested without incident in Woburn Wednesday, police said.
"We are grateful to the news media for broadcasting the surveillance video, and well as the many followers on the Police Department Home Page and Social Media, which led to several tips, identifying Williams as the suspect," Pasquarello said in the statement.
The video from the Somerville robbery shows a man, allegedly Williams, approach the counter of the Quick Stop Convenience Store at 219 Highland Ave., place a candy bar on the counter, then pull a long barreled handgun from his pocket. He demanded cash from the register and "the box under the counter" when the store clerk opened the till, police said. He made off with about $1,000 in cash.
Police said Williams wore a black knit cap and grey striped pants in the Somerville robbery, the same outfit the suspect wore in three armed robberies committed in Medford Jan. 24.
Williams will be arraigned in Somerville District Court Wednesday afternoon, police said.