Police in Pakistan are restricting the movement of an Islamic charity leader accused of involvement in the 2008 Mumbai (Bombay) attacks.
Jamaat-ud-Dawa founder Hafiz Mohammad Saeed has also been barred from leading Eid prayers in Lahore, reports say.
Mr Saeed founded Lashkar-e-Taiba, the group India accuses of carrying out the attacks. Jamaat-ud-Dawa and Mr Saeed deny they are linked to the attacks.
India wants Mr Saeed questioned about his "role" in last November's violence.
"If this is a face saving technique I have no objection. My demand is that he be interrogated on the Mumbai attacks... on his role in the Mumbai attacks," India's home minister P Chidambaram said.
More than 170 people, including nine gunmen, were killed in the attacks.
Pakistan detained Mr Saeed last year. He was freed in June after a court ruled there was insufficient evidence to prosecute him.
Police have been deployed outside Mr Saeed's house in the Johar Town area of Lahore.
HAFIZ SAEED IN CUSTODY
December 2001-March 2002: Arrested and released three times after Lashkar-e-Taiba was accused of attacking Indian parliament
August - October 2006: Detained after Lashkar-e-Taiba was linked to multiple train bombs in Mumbai
December 2008 - June 2009: Placed under house arrest after Lashkar-e-Taiba was blamed for Mumbai attacks
His son in law, Khalid Walid, told BBC Urdu that Mr Saeed had been told not to leave his house because of "security risks".
Mr Saeed was prevented from going to Lahore's Gadaffi stadium to lead Eid prayers at the end of the Ramadan fasting month because of the restrictions, his aides say.
He was later allowed to to attend prayers at his local mosque.
A senior police officer told reporters that Mr Saeed's movements had been curbed for security reasons, but denied he was under house arrest, Reuters news agency reports.
The move to restrict Mr Saeed's movements comes days after Pakistani authorities filed two cases against him for giving speeches allegedly "glorifying" jihad.
Some Indian analysts read a pattern into Pakistani actions just before more talks are due between India and Pakistan in New York, says BBC Hindi editor Amit Baruah.
He says a quick trial and conviction of seven suspects in custody in Pakistan in connection with the Mumbai attacks would go a long way to convince Indian public opinion that Pakistan is serious about tackling terrorism.
Indian authorities say there is evidence to show that the Mumbai attacks were planned and financed by Lashkar-e-Taiba in Pakistan.
Pakistan has admitted that they had been partly planned from its soil.
Founded in the late 1980s, Lashkar-e-Taiba is one of most feared groups fighting against Indian control in Kashmir.
After it was banned in Pakistan in 2002, the organisation divided itself into Jamaat-ud-Dawa and Lashkar-e-Taiba, correspondents say.
Jamaat-ud-Dawa works as an Islamic charity all over Pakistan.