Liverpool :A car exploded outside a hospital in the British city of Liverpool on Sunday, killing at least one person.
While the cause of the incident remains unclear, local police said that counterterrorism officers are currently in charge of the investigation.
"We are keeping an open mind as to what caused the explosion but given how it has happened, out of caution, Counter Terrorism Police are leading the investigation," Merseyside county police said in a statement.
The explosion took place outside the Liverpool Women's Hospital shortly before 11:00 a.m. GMT.
One person was killed and another person was injured as a result of the blast, but did not suffer life-threatening injuries. No further information on the victims was immediately available.
The vehicle involved was a taxi cab, which exploded shortly after pulling up to the hospital, police said.
Officers later arrested three men — ranging in age from 21 to 29 — under the UK's "Terrorism Act," Greater Manchester Police said on Twitter.