A New Delhi court on Saturday extended the judicial custody of three suspects arrested over last week's suicide attack on Parliament.
The court extended judicial custody for another two weeks for three of the suspects while the police custody of a fourth suspect was extended another seven days, officials said.
Police arrested three men and a woman on December 16 over the suicide raid on Parliament that killed 14 people - including five assailants.
India blames the Jaish-e-Mohammed and Lashkar-e-Taiba for the attack and has demanded Pakistan close down the groups and arrest their leaders. India says Pakistan's military intelligence wing has strong links with the groups.
Pakistan denies any involvement in the December 13 attack.
Meanwhile, India has moved more troops to the border, saying it was responding to a Pakistani build-up and the two sides have traded heavy mortar and machinegun fire across the tense frontier.
An angry Indian government on Friday recalled its envoy to Pakistan for what it termed Islamabad's failure to act against terrorism.
Pakistani President Pervez Musharraf denounced the recall, calling it a "very arrogant and knee-jerk response" to tension over the Parliament attack. He said Islamabad would not respond in kind.
President George W Bush urged Musharraf on Friday to crack down on the two groups and promised US help in the effort.
"The President calls on him to take action against the Lashkar-e-Taiba, the Jaish-e-Mohammed and other terrorist organisations, their leaders and their finances," White House spokesman Ari Fleischer said. "The President will support President Musharraf in his efforts against terrorism."
"President Musharraf has condemned the terrorist attacks on the legislature in Srinagar and on the Indian Parliament. He has said that he would move against those involved in the attacks," Fleischer said. "President Bush has every confidence in President Musharraf's capacity to act against the terrorists."
India says militants, including some from Afghanistan, have received training at a number of camps in Pakistan-administered Kashmir and has hinted in the past that it reserves the right to take military action against them. Bureau Report