Douglas County prosecutors have filed an aggravated battery charge against a 22-year-old Atchison man who is accused of punching and injuring a Lawrence man early Thursday.

Prosecutors Thursday filed the aggravated battery charge against Joshua W. Downing, and a judge set his bond at $20,000, cash or surety. Sgt. Matt Sarna, a Lawrence police spokesman, said Downing was accused of punching a 21-year-old Lawrence man in the head as the victim was walking near Lawrence High School along 19th Street.

Sarna said the victim was walking with some friends around 2:40 a.m., and they alleged the suspect, Downing, and another man pulled up alongside the group in a silver car. The suspect then got out of the car and struck the victim, who fell to the ground.

The victim was taken to Lawrence Memorial Hospital for treatment. Officers located the car in the 2100 block of Vermont Street and arrested Downing. Sarna said Downing and the victim did not know each other.

Downing has a court appearance set for Tuesday. An LMH spokeswoman said the victim was treated and released.