The Indian government voiced its unhappiness Tuesday over a Pakistani court decision to release the head of an Islamic charity India says was linked to last year's terror attacks on Mumbai. Lahore High Court declared the detention of Jamaat-ud-Dawa chief Hafiz Mohammad Saeed and three other members of his party unlawful. “We are unhappy that Pakistan has not shown the degree of seriousness and commitment it should have to bring to justice the perpetrators of the Mumbai attacks,” Indian Home Minister P. Chidambaram said. Lahore High Court ordered the release of the founder of banned militant group Lashkar-e-Taiba because there was insufficient evidence to link him to last year's deadly Mumbai attacks, his lawyer said. The court decision to free Saeed from house arrest came as tensions are spiking in Pakistan's northwest along the Afghan border. Security forces early Tuesday rescued dozens of students and others kidnapped by militants, and the army continued to battle Taleban fighters in the Swat Valley. Saeed was among several suspects taken into custody in December in Pakistan, which came under tremendous pressure from the United States and other governments to investigate domestic links to the attacks. The 59-year-old cleric created Lashkar-e-Taiba in late 1980s to fight Indian rule in Kashmir. Indian prosecutors allege the group masterminded the Mumbai attacks. The group, which is believed to have supporters within Pakistan's intelligence agency, was banned by Pakistan in a security clampdown that followed the Sept. 11, 2001, attacks in the US. Washington lists it as a terrorist organization. But the group re-emerged as Jamaat-ud-Dawa, which Saeed says is a charity with no links to terrorism. After the Mumbai attacks, the United Nations listed Jamat-ud-Dawa as a front for Lashkar-e-Taiba, prompting Pakistan to freeze the group's assets and put its leaders under house arrest.