DENVER -- Police closed South Federal Boulevard in both directions at West Mexico Avenue on Tuesday afternoon as they investigated a report of possible shots fired from a nearby apartment.
Police responded to the scene a little before 3 p.m. Less than an hour later, they said they had one person of interest in custody, but the investigation continued.
Federal was closed between Florida and Jewell avenues while police worked to resolve the situation.
Police said Denver firefighters were in the 1600 block of South Federal Boulevard on a separate call when they thought they heard gunshots.
No injuries were reported during the incident and it's not clear if firefighters were targeted.
"At this time, that's still being investigated. We're not sure if that was the case, but with them being in the area, they were responding to another incident, they weren't really sure what was going on," police spokeswoman Raquel Lopez said.
"They did hear shots fired and determined that they better call out Denver police. At that time, we did respond."
There was no further action, and police cleared the scene and reopened Federal Boulevard about 4:30 p.m.