A bomb found in Londonderry on Sunday night was left outside the family home of a serving police officer, the PSNI has said.
Several homes were evacuated just after midnight as army bomb experts examined a suspicious package at Drumleck Drive in Shantallow, .
The officer does not live in the house. The bomb has since been defused.
A rally in Londonderry by the Real IRA, at Easter heard a masked man threaten further attacks on police and soldiers.