Chicago police are warning people to walk in groups after two women were sexually assaulted on the city's Near North Side.
In a community alert, the department says that the first attack happened June 17 and the second one happened early Sunday morning. The alert says in each case a man approached the victims on the street, dragged them into an alley and then sexually assaulted them.
The department believes the same man is responsible for both attacks.
Anyone with information is asked to call Area Central detectives at (312) 747-8380