Lincoln Police responded to a robbery at Union Bank located at 2201 and Highway 2 Monday around 9:45 a.m.
According to police, the suspect ran into the bank brandishing a gun. He hopped over the teller counter demanding money. Then he ran off with an undisclosed amount of cash through Peterson Park into a nearby neighborhood.
During their investigation, police found a hand gun and some money in a bag behind a nearby business.
They say the robber dropped the cash because a dye pack had exploded, staining the bills red.
Dye packs are used by banks to reduce thefts and help police apprehend suspects.
Lincoln Police Officer Katie Flood says if the robber was splashed with dye it likely won't wash off for several days.
Police are looking for a black male, 5'9" inches tall about 145 pounds, a slender build, 30-40 years of age, wearing a white straw hat and red hoodie.
"And it is possible that he does have some red stain on his hands clothing face, where the dye may have touched during that detonation," said Officer Katie Flood.
Lincoln Police and the Nebraska State Patrol's K-9 units assisted in the search for the suspect.
Police say the robbery may be related to other robberies, including the one at US Bank on 56th Street & Hwy 2 on June 23.