Car bomb in Colombian port city

At least four people are now dead after a car bomb exploded in the centre of the Colombian port city of Buenaventura.



Officials say more than 20 people were injured in the blast which happened near the mayor\'s office and the local attorney general\'s building.



There was no immediate claim of responsibility for the blast.



The explosion is said to have caused widespread damage in the centre of Buenaventura, Colombia\'s main Pacific port.