The death toll from last week\'s triple bomb blasts in the Indian city of Mumbai has risen to 20 after one of the wounded died in hospital, a senior medical official said on Tuesday. The dean of the state-run J.J. Hospital, T.P. Lahane, said that a 45-year-old man passed away on Tuesday morning, according to the Press Trust of India news agency. Lahane was not immediately available for comment when contacted by AFP. The simultaneous rush-hour blasts last Wednesday in the diamond trading hub and jewellery quarter of south Mumbai as well as a third district of the city left more than 130 people wounded. Two people died in hospital over the weekend. No group has claimed responsibility for the attacks, which were the first in India\'s financial and entertainment capital since the November 2008 Islamist militant strikes that killed 166. Suspicion has fallen on domestic militants the Indian Mujahideen, which has said it was behind a string of bomb attacks across India in 2008, including in the capital New Delhi. Police have said they are making headway and have \"good leads\" on the bombings, which involved the detonation of home-made ammonium nitrate bombs left in metallic containers in the crowded streets.