A BODY has been found in a building after an explosion during a stand-off with a man who had taken his wife hostage.

Nine police officers are being treated for non-life threatening injuries and the remains of one unidentified person was found in a building at the home in North Haven, Connecticut, State Police Trooper Kelly Grant said.

He said a post-mortem examination was scheduled to identify the body. He added there is no-one in custody.

Kelly said a woman called police to report domestic violence before the explosion at a barn behind the home on Wednesday night. First Selectman Michael Freda said the wife escaped before the explosion.

“This started late this afternoon with what was apparently a very violent domestic call,” he said.

All nine officers remain in hospital. Yesterday afternoon, firefighters were continuing to battle the fire that also damaged other structures and vehicles.

Residents near the home said on the police department’s Facebook page that they heard the explosion and felt their own homes shake.

Additional police rushed to the scene as the fire raged.

Police were heard continuing to try to coax the man out of the house even after the explosion last night.

North Haven resident Joan Mazurek, 76, a retired accountant, heard what she thought was a train at her home about a mile away. It was the explosion.

"Then we heard all the, oh my God, all the ambulances and fire engines. The noise from all the emergency vehicles was unbelievable," she said.

"It's a shock. Nothing ever happens like this in North Haven."