Aden - A suicide bomber killed at least four people Tuesday in Yemen's southern port city of Aden.

Smoke rises from a mall after clashes in Yemen's southern port city of Aden February 9, 2016. The recapture of Aden by Gulf Arab coalition troops last summer has failed to provide any respite from Yemen's civil war, with residents facing a wave of bomb and gun attacks that is crippling efforts to stabilize the city. REUTERS/Stringer FOR EDITORIAL USE ONLY. NO RESALES. NO ARCHIVE.