A Hastings man walked naked into the street before heading back inside and stabbing himself after being spotted by police.
The 18-year-old was spotted by a member of the public standing naked on Grays Rd about 7.30am yesterday and was then seen by an off-duty police officer.
When the officer tried to turn his car around, the man went back into a property and stabbed himself a number of times in the chest.
An elderly female relative of the man, in her 70s, was also found at the address, and police believed she had been assaulted by the man.
They were both taken to Hawke's Bay Hospital, the woman with moderate head injuries and the man with critical injuries.
Police are conducting a scene examination to find out what happened and were not seeking anyone else in relation to the incident.