The suspect in the fatal shooting of a woman at a pub in Kent "may have entered the water" at the Dartford Crossing, Kent Police have said.
The suspect, who is believed to be known to the victim, a woman in her 40s, left the area after the incident outside a Kent pub on Friday evening.
"Call handlers received reports of a man on the wrong side of the barrier and we are not ruling out the possibility that he may have entered the water," said senior investigating officer Detective Chief Inspector David Higham.
Neither the suspect or victim are thought to have been from Kent but are believed to have local connections to the area.
Officers discovered a vehicle linked to the incident and a firearm at the Dartford Crossing in Kent.
