Four men arrested over attempted murder of police released after questioning

PSNI assistant chief constable Bobby Singleton said the location of the incident in Strabane and previous attacks made the involvement of the dissident republican splinter group a possibility.

Four men have been released following their earlier arrests over the attempted murder of two police officers in Co Tyrone (David Young/PA)

Four men have been released following their earlier arrests in Northern Ireland over the attempted murder of two police officers in Co Tyrone.

The men, aged 38, 36, 36 and 28, were arrested under the Terrorism Act after police conducted a number of searches in Strabane on Friday and Saturday.