There was a heavy police presence on a residential street in Bradwell on Saturday afternoon.
Officers were seen at a home on Mill Lane for around seven hours from 3.30pm to 10.30pm.
Neighbours reported seeing forensic officers at the scene.
Norfolk fire service was also called.
Police are yet to comment about the incident.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here