Police were called to a domestic incident at Omega House in St Andrew’s Street, Northampton this morning (Tuesday).
Armed officers and police dogs surrounded the outside of Omega House, while others officers spotted inside the complex.
Officers were also guarding a door leading to the building from the underground car park.
A spokesman for Northamptonshire Police said: “Officers were called to a domestic incident at Omega House in St Andrew’s Street, just after 10am this morning.
“Nobody was injured during the incident but police are interested in speaking to a man in connection with it.
“The man is believed to be in the Northampton area and officers are conducting a search.”
The police helicopter was despatched to help with the search.
One resident, who asked not to be named, said: “I looked out of my window and saw lots of police with guns and police dogs in the communal garden.
“We were all told not to leave for our own safety. We heard a loud smash at around 10.15am and it’s all been happening since then.”
Just after 4.30pm today, a spokesman for Northamptonshire Police said: “The incident is now closed. Residents are now free to leave their homes.”
The force said it wouldn’t be releasing any further information due to it being a domestic incident.