Armed police have swooped on home in Peterborough.
Officers carrying guns were seen surrounding an address in Belham Road, New England, this afternoon.
A spokesman for Cambridgeshire police said: "We were called today at just after 12pm with reports of a firearm being discharged at a property in Belham Road, Peterborough.
"Investigations resulted in a 25-year-old man being arrested at around 2:30pm on suspicion of possession of a firearm with the intention to endanger life. The suspect has been taken to Thorpe Wood Police Station. "