A murder investigation has been launched after the bodies of two men were found dumped on an isolated road.
The bodies were discovered by a passing motorist in New Lane, Bradford, just a mile or two from the suburbs of the city, shortly before 10.30pm on Tuesday.
Detective Superintendent Dick Nuttall, of West Yorkshire Police, said the two victims were in their mid-20s to 30s and his team of officers were trying to establish their identities.
He said no weapons had been recovered and would not comment on reports that the two men had been beaten. He also said he did not want to speculate on their nationalities until they had been identified.
He said: "We are also examining the possibility that these bodies were left on New Lane following an attack.
"At this stage we have not recovered any weapons; however, forensic officers are currently examining the scene."
He said officers from the local Neighbourhood Policing Team would be patrolling the area to offer reassurance and speak to residents about any concerns.
Mr Nuttall said: "We are looking at the possibility this is not a random attack. These men may have been brought here after an attack elsewhere."
The detective was asked whether he thought the killings were gang-related but he said it was far too early to speculate.
Mr Nuttall said: "Inquiries at the moment are focused on identifying the two men and establishing the circumstances in which they came to be found in New Lane."