The shootings occurred in two locations on Wednesday evening. Two hookah lounges reportedly were targeted.
Authorities were searching for the perpetrators early Thursday, hours after the shootings at about 10 p.m. local time, which police said also left about five people wounded.
Police do not know who’s behind the shootings and are asking the public for help. They didn’t say if anyone was wounded. Hanau is about 16 miles east of Frankfurt.