LINCOLN, Neb. -- Lincoln Police charged a 22-year-old man with first-degree murder for their alleged involvement in Sunday's fatal downtown shooting. 

According to the Lincoln Police Department, officers were called to the area of 18th and O Streets on a report of a man who had been shot in an alley south of O St. on Sunday. 

Police said they found a man, 33-year-old Robert Brannon, and attempted life-saving measures. He was later pronounced dead at the scene. 

Authorities said the suspect, 22-year-old Jahhrasta Fletcher, was seen on surveillance and later ran away from the scene. 

According to LPD, surveillance showed that Fletcher and Brannon encountered each other near a local business. Fletcher produced a firearm and fired at Brannon, who then falls to the ground. 

Police said Fletcher was taken into custody Monday morning without incident.