A 21-year-old man has been charged with multiple offences including assault, possession of weapons for a dangerous purpose and assaulting a peace officer after an eight-hour standoff with police in Kitchener.

The police operation ended around 12:30 p.m. after the man, dressed only in his underwear, was escorted out of the house and put into an ambulance waiting nearby.

Police said they received a call about an assault at 74 Shanley St. around 4:30 a.m. Thursday, and when they arrived on the scene, the focus shifted to a man inside the home.

"We found a male inside a residence who we wanted to speak with in relation to an incident earlier this morning. The male initially refused and we contacted our special response officers to assist," said Waterloo Regional Police spokesperson Olaf Heinzel.

At least eight police vehicles, including a mobile command unit and tactical police officers with guns drawn occupied a stretch of Shanley between Moore Avenue and Waterloo Street on Thursday morning. Police also secured a large perimeter spanning a few blocks around the home and asked nearby residents to stay indoors.

Police said later Thursday the man had barricaded himself inside the home. Police said they tried to negotiate with the man in order to help him, but were unable to persuade him to let officers in.

At around 12:10 p.m., police and paramedics managed to enter the home and escorted the 21-year-old man out.

"Through the course of several hours and negotiations with the individual we were able to bring the situation to a peaceful resolution," said Heinzel.

Heinzel added that there was no threat to public safety.

The investigation into the other incident earlier this morning is ongoing.