A worker at a Wal-Mart store stole more than $2,000 from a cash register, but then put it back the next day, police said. Christopher Pelletier, 23, of Cumberland, R.I., pleaded not guilty Wednesday in Attleboro District Court to larceny of property worth more than $250. Police said Pelletier was arrested at the store Tuesday after an investigation by store security, who reported the alleged theft to police. The Sun Chronicle reported that police said Pelletier was seen on store surveillance video Monday stuffing cash from the register into his shirt pockets. He put the money back in the register when he returned to work Tuesday.