A little-known outfit calling itself Lashkar-e-Qahhar has purportedly claimed responsibility for Tuesday's serial blasts in Mumbai.

An e-mail -- reportedly from Lashkar-e-Qahhar -- to Hindi news channel Aaj Tak claimed the outfit was associated with Al Qaeda and the Pakistan-based terrorist organisation Lashkar-e-Tayiba.

The e-mail said 16 Qahhar activists had carried out the blasts in Mumbai and threatened more attacks if the Indian government does not stop the 'exploitation of Kashmiri people.'

The same outfit had claimed responsibility for the bomb blasts in Varanasi in March this year.