Police arrested a 17-year-old boy and were looking for two women Friday night for the robbery of three teenage girls at Ala Moana Beach Park.

Police said the victims, two 16-year-old girls and one 17-year-old girl, were sitting at the park after shopping when the robbers approached at about 9:30 p.m.

The robbers demanded money and property and attacked the victims when they refused, police said. They took the victims’ property and ran into the Ala Moana Center, police said.

Officers found the boy and recovered some of the property from him. Officers arrested him for investigation of second-degree robbery.

Police are still looking for the 2 female suspects, believed to be between 17 and 21 years old.