"Three people have been fatally wounded, including the suspected offender," a statement from Lincolnshire Police said yesterday, confirming a "firearms incident" near a swimming pool.
"There is an ongoing police investigation and at this stage we are not looking for anyone else in connection with the incident. "There is no indication that this is a terrorist related incident and no shots have been fired by police."
The incident began at around 9.00 am (local time) when police were called to reports of a person injured near the Castle Swimming Pool in Spalding, a town in Lincolnshire.
"We would urge members of the public to stay away from the area at the present time," police said. In a short statement on its Facebook page, the Castle Sports Complex and Swimming Pool said it was closed "due to an incident in the local area".