MILWAUKEE — Milwaukee police are investigating the overnight fatal shooting of a 14-year-old boy.

In an email, Deputy Inspector Terrence Gordon says a man fired shots into a crowd striking four people during a fight around midnight Friday.

He says the 14-year-old was killed, while a 15-year-old boy and a 22-year-old woman were seriously injured but expected to survive. A 17-year-old boy also suffered a minor gunshot wound.

Ashley Johnson told the Milwaukee Journal Sentinel she did CPR and chest compressions on the 14-year-old until paramedics arrived. She says he was bleeding but conscious until he tried to get up, then fell unconscious.

She says there was still fighting even after the police arrived.

Police are also investigating other shootings involving four separate men being shot. They are all expected to survive.