Anand, Sep 7 - Four people were detained after a Pakistani flag was found atop a tree in the premises of a Muslim shrine in Gujarat's Anand district, police said Monday.

'We have detained four people, including a trustee of the shrine in Umreth town. They are being questioned as to how the Pakistani flag went unnoticed for the last two months as informed by the local residents,' a senior police official said.

'The state home department had been informed of the detention as the matter is sensitive. A Pakistani flag had been spotted for the first time in the region,' he said.

Anand is some 75 km from Gujarat's capital Gandhinagar.