A cordon has been set up by police at a house in Oxford.
One witness said as many as three ambulances had been at the property.
Neighbours also reported seeing two police cars and forensics officers were pictured entering and leaving the house on The Slade in Headington.
Police tape remains in place and a police van is parked outside.
Police have been contacted for more information.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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