A man shot and wounded his stepbrother in South Portland on Tuesday afternoon, police said.

South Portland police officers responded to a reported shooting at 616 Westbrook St. around 4 p.m., the department and the city of South Portland said in a joint statement.

The responding officers found a 30-year-old man who had been shot in the lower leg and applied a tourniquet to his wound, the department said. The man was taken to Maine Medical Center, and his injury was considered serious but not life-threatening.

Police identified the shooter as 41-year-old John Williams, of South Portland, the victim’s stepbrother.

Williams has been charged with assault, reckless conduct and elevated aggravated assault, the department said. Officials transported him to Cumberland County Jail.

The investigation is ongoing, but there is no ongoing threat to the public, the department said.