Police investigate another stun gun robbery in D.C.

Police are investigating another stun gun robbery in Northwest D.C.

Two people say three men approached them just after 2 a.m. Wednesday in the 4000 block of Georgia Avenue, demanding their stuff. One suspect went through one victim's pockets. Another suspect threatened them with a stun gun, stole their bikes and then took off.

Police believe the group may be responsible for two similar robberies over the weekend.