A County Durham man has died three days after being subdued by police officers with a baton round and a stun gun.
Police fired a baton round and a Taser stun gun
Officers opened fire after being called to the Sacriston home of 47-year-old Brian Loan following reports of a woman being threatened with a samurai sword.
Mr Loan's body was found at his father's address in Gateshead on Saturday. A post-mortem examination revealed he died of natural causes.
The Independent Police Complaints Commission has started an inquiry.
It was the first time a baton round has been discharged in County Durham.
Following the incident, Mr Loan was charged with making threats to kill, three offences of assault, and making threats to damage property.
He appeared before magistrates on 12 October and was bailed on condition he stayed out of County Durham and lived at his father's address in Gateshead, Tyneside, where his body was found.
A spokeswoman for Durham Police said: "A detailed post mortem was carried out by a Home Office pathologist and the cause of death was said to be natural causes.
"We are waiting for the results of further toxicology tests.
"The Independent Police Complaints Commission has been informed, and we are awaiting further instructions on what direction the inquiry may take."