COLOMBO, Nov 28 (Reuters) - Sri Lanka's Tamil Tigers killed 16 people in a second bomb attack in hours in the capital Colombo on Wednesday, the military said.

"There are 16 dead bodies in the hospital and 20 people wounded," a military spokesman said, referring to the second attack, which took place near a shopping centre in a residential quarter of the city.

A Tamil Tiger suicide bomber blew herself up near the office of a minority Tamil minister earlier on Wednesday, killing his personal secretary.

(Reporting by Ranga Sirilal, Editing by Simon Gardner and Sanjeev Miglani)

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