Nova Scotia's police watchdog says there are no grounds to lay charges against two RCMP officers in the death of a man suspected of killing his wife last year.

The 49-year-old man died Oct. 16 from a self-inflicted gunshot during a standoff with RCMP in the Portapique area, about 40 kilometres west of Truro.

The body of his 47-year-old wife was found earlier in the day at an apartment in Truro Heights.

The Serious Incident Response Team says the distraught man, who was barricaded inside a truck, told police he had killed his wife and intended to commit suicide.

"He was very distraught about what he had done. He remained in his truck the entire time," said Ron MacDonald, the head of SIRT. 

"The SIRT investigation found that the operator and both police officers were very professional when dealing with the man, and the officers demonstrated the best aspects of persons trained in negotiation techniques."  

SIRT says the two Mounties who negotiated with the man for more than 12 hours acted appropriately as they tried to coax him into surrendering.

The man took his own life at the scene.