A 68-year-old man told cops he made a mistake when he groped a teenager on a city bus in Queens Tuesday, police said.

Zacarias Timana, 68, groped and fondled the buttocks of a 13-year-old girl as she rode the Q44 bus at Main St. and Union Turnpike in Briarwood at about 7:40 a.m.

She turned around and turned him to stop, and he told her, OK, but when she turned his back on him, he did it again, according to a criminal complaint.

Thats when the girl stormed to the front of the bus and told the driver, who stopped and called 911, cops said.

Cops hunt for man who groped 2 straphangers on Manhattan subway

I made a mistake, Timana said, according to the complaint.

He was arraigned Wednesday on several misdemeanor charges, including sexual abuse, forcible touching and child endangerment, and ordered released on his own recognizance.

Attempts to reach him for comment Wednesday were unsuccessful.