NEW DELHI (AP) - Amnesty International on Friday slammed India’s new anti-terror legislation to beef up police powers in the wake of the Mumbai attacks, saying it violates international human rights treaties.

The London-based human rights group called on India’s president not to approve the legislation, which would double the number of days police can detain terror suspects before filing charges, from 90 days to 180, as well as boost their powers to conduct searches.

Both houses of India’s Parliament passed the bill this week, following last month’s attacks on Mumbai by suspected Islamic terrorists that killed 164 people. It now needs President Pratibha Patil’s approval before becoming law.

"While we utterly condemn the attacks and recognize that the Indian authorities have a right and duty to take effective measures to ensure the security of the population, security concerns should never be used to jeopardize people’s human rights," Madhu Malhotra, Asia Pacific Program Deputy Director at Amnesty International, said in a statement.

Officials at India’s Home Ministry, which drafted the bill, could not immediately be reached for comment Friday.

The government’s top law enforcement official, Home Minister Palaniappan Chidambaram, defended the bill in Parliament on Wednesday as providing an "adequate balance" between "the demands of human rights and the people of India for strong anti-terror laws."

The Mumbai attacks revealed glaring gaps in the nation’s security systems and a shaky intelligence apparatus that missed several warning signs of the siege, which lasted for three days and paralyzed much of India’s financial capital.