GRAND FORKS (AP) - A teenager accused of robbing convenience stores in Grand Forks has pleaded not guilty.

Authorities say 19-year-old Gypsy Watts is charged with terrorizing and four counts of robbery.

Authorities say Watts robbed four stores, beginning in late April. Watts is accused of threatening a clerk with a knife during one of the robberies.

Watts is being held in the Grand Forks County jail.

He has a pretrial hearing set for Aug. 20.