Imphal, April 22: Maoist Communist Party Manipur MCPM has claimed responsibility to the blast occurred at Lamphel Police Station at around 7.30 pm yesterday. In a press statement the rebel group said that the attack was carried out by its urban militia armed wing. The statement further added that the kind of attack showed the growth of the Maoist group and is a warning to the oppressive government about the rise of the revolutionary movement in the region. The Maoist also warn all reactionary force including the authority of RIMS and other group which stand as an obstacle to the ongoing revolutionary movement to restore the freedom of the nation.