Police closed a Southsea road after concerns over the welfare of a man inside a house.
Jubilee Road was closed off to allow emergency services to respond to an incident.
Police officers were called at 10.15am from a member of the public who was concerned for the welfare of a man inside a house on the street.
The man was alone in the house and specially-trained oficers talked to him before the incident was dealt with and the road was reopened at 1.55pm.
Police are still to reveal full details of what took place.