A makeshift explosive consisting of plastic foam, brown paper and a canvas bag went off in an area between two townhomes Thursday morning.
No one was injured in the incident, which occurred near Wellington Greens at 70th and South streets.
"It doesn't look like there were any damages, even to the grass, because of the Styrofoam," Fire Investigator Damon Robbins said. "We didn't see any shrapnel."
Lincoln police responded to the explosion shortly before noon among a cluster of homes on Kimberly Court, just off South Street.
The explosion scattered debris about 30 feet in each direction, and Robbins said there were singe marks present from possible flash powder illegal fireworks.
One of the residents was able to identify a person of interest who left the area shortly after the blast on a bicycle.
Rhonda Bills, who lives close by, said she heard a "loud kaboom" before running outside.
Joan Jennings, another neighbor, was sitting downstairs in her family room before she heard the noise.
"I thought my whole kitchen exploded," she said. "It was so loud."
The Lincoln Police Department is investigating the incident.