The body of a woman has been found in a house in Blyth.
Officers were led to the address in Holywell after an earlier car crash in Shiremoor.
A woman has been taken to the Royal Victoria Infirmary in Newcastle in a serious condition.
Both scenes are currently being examined by police.
We are at the earliest stages of an investigation into today's events.
We are not in a position to release any further information at this time.
Local residents can be reassured that we will have extra officers in the area not only as part of the investigation but also to address any concerns people may have."
More top news
A multi-million pound performing arts centre is set to open in Hartlepool, following a council decision to take it over.
Theresa May will trigger Article 50 and the start of the two-year period for the UK to negotiate its EU exit terms next week, so what next?
WWT Washington Wetland Centre has seen four otter cubs born, becoming the latest cubs to offer vital support to the vulnerable species.