Sanford police arrested a woman and her daughter in connection with a convenience store robbery for which a Sanford man also has been charged.

Police charged Donna Gray, 56, and her daughter Jenna Gray, 25, both of Sanford, with robbery in connection with a holdup at East Side Convenience in Sanford at 4 p.m. Oct. 11.

Police on Thursday arrested Matthew Prior, 25, charging him with one count of Class A robbery for robbing the store at gunpoint. As he ran from the store, Prior – Jenna Gray’s boyfriend – was hit by a car and lost a sneaker before getting into a waiting four-door Ford sedan, police said.

On Friday, the two women were charged with being Prior’s accomplices, police said.

“We had a lot of witnesses,” said Police Chief Thomas Connolly Jr. Investigators got a description of the driver, who police believe was Donna Gray, and the car.

Ultimately, detectives located the hospital in New Hampshire where the women took Prior for treatment of “significant but not incapacitating” injuries from being hit by the car, Connolly said.

“It was just good detective work,” Connolly said. “The guys worked really hard.”

Bail for Prior was set at $10,000 and for the two women at $5,000 each.

Police have not disclosed how much money was taken during the robbery.