Brussels - The European Union's executive body on Wednesday condemned as "appalling" the bomb attack in the Lebanese town of Tripoli which killed at least 17 people.

"I strongly condemn the bomb attack in Lebanon this morning, which caused numerous casualties - both civilian and military - in the city centre of Tripoli," EU Foreign Affairs Commissioner Benita Ferrero- Waldner said in a statement.

"The perpetrators of this appalling terrorist crime must be pursued and brought to justice.

"I express my sincere condolences to the families of those killed and injured at this time of loss.

"The EU remains steadfast in its support for strengthening the institutions of the Lebanese state, and is ready to support all efforts to reinforce stability in the country," the statement said.

The explosion tore through a bus the northern Lebanese town of Tripoli at rush hour on Wednesday morning.

A large number of the casualties were soldiers. (dpa)