Four people have been found dead in a house, police have said.
The bodies of a man, a woman and two female teenagers were discovered after officers were called to a property in Clayton, Bradford, last night, West Yorkshire Police said.
They said they are not currently looking for anyone else in connection with the inquiry.
Officers went to the property at 8.30pm last night.
In a statement, the force said: “Inquiries are at a very early stage, but police are not currently looking for anyone else in connection with the inquiry.”
Police have sealed off the area while forensic investigations take place and these are expected to take some time.
“We are not currently in a position to release further details, but hope to be able to give a further update later this morning,” said a spokesman.