DAYTON — A dirty white sweatshirt helped police link a pair of pharmacy holdups, leading to the arrest of three suspects in Dayton early this morning including a woman who police say robbed a pharmacy barefoot.

Police say the woman who robbed an Old Orchard Beach Rite Aid pharmacy Thursday wearing a dirty sweatshirt and no shoes matched the description of a woman who robbed the Hannaford pharmacy on Route 5 in Waterboro Sunday, said York County Sheriff Maurice Ouellette.

In both cases, the woman demanded OxyContin.

The sheriff’s office alerted police agencies in the surrounding area to a vehicle description given by a witness, and an off-duty Biddeford officer spotted what looked like the car in Saco Monday afternoon, Ouellette said.

The vehicle registration led detectives to a house in Dayton, which they kept watch on until a woman and two men left some time after midnight. After a brief car chase, the three jumped out and tried to run but deputies tackled them.

Police said the woman, Jennifer Nicholas, 30, had a broken leg from an earlier motorcycle accident.

Police charged Nicholas with robbery, Richard Tozier, 52, with conspiracy to commit robbery and drug possession and Todd Storm, 50, with conspiracy to commit robbery and eluding police. All three live at 85 Hight Road in Dayton.

The three were taken to York County Jail.