Three people at three different locations were robbed at gunpoint early Saturday.
Police say the suspect hit the victims in the back of the head with the gun.
The robberies occurred between 1:30 a.m. and 2 a.m. in the 5200 block of 15 NE, 5000 block of 22 AV NE, and 5600 block of University Way.
The suspects on two of the incidents were described as two black males in their 20's and on the third incident the suspect was described as a white male.
Police say some of the victims were intoxicated and not able to provide much information.
It's not known if the three incidents are connected.