Radio Pakistan reported yesterday that Pakistan troops sealed the border with India at Petrapole after beating back a band of infiltrators and their collaborators.

Officials on the Indian side confirmed that the border has been sealed, but denied that Indians entered East Pakistan to fight or open fire on the Pakistanis from the Indian side.

They charged that ,a Pakistani soldier with a machine gun crossed into Indian territory and tired at civilians and border security men on Saturday. It was not known it there were any casualties.