Two more arrested over Northern Ireland car bomb - police

Two more men were arrested on Sunday over a car bomb attack in Northern Ireland's Londonderry, police said, bringing to four the number in custody related to the investigation.

Earlier on Sunday, two men in their twenties were arrested as police investigated whether the New IRA militant group was responsible for Saturday's attack. The two other men aged 34 and 42 were arrested in the city later on Sunday. (Reporting by Padraic Halpin; Editing by Dale Hudson)