Pakistan-based terrorist groups are continuously trying to infiltrate into Jammu and Kashmir by taking advantage of cross-border firing as they aim to carry out "spectacular attacks" ahead of US President Barack Obama's visit to India, according to security agencies.

Quoting intelligence reports, senior Home Ministry officials said the terrorists were waiting for opportunity in eight locations along the International Border and Line of Control to sneak into India to indulge in terrorist acts.

"As per our information, the militants have the blessings of the highest authorities of Pakistan Army," an official said.

The largest group comprises about 40-45 terrorists who are waiting at the launching pads just across the Samba sector in Jammu and Kashmir. There has been heavy exchange of firing between the BSF and Pakistan Rangers in this sector.

"The Pakistan-based groups are planning to carry out spectacular attacks ahead of Obama's visit to India to attend the Republic day parade," the official said.

Home Minister Rajnath Singh today accused Pakistan of trying to push terrorists into Jammu and Kashmir and giving cover to such attempts by continuous firing along the border.

"No doubt about that," Home Minister Rajnath Singh told reporters here when asked whether the repeated ceasefire violations by Pakistani troops were to cover infiltration attempts by militants.

Pakistan Rangers yesterday targeted 13 border outposts in Samba sector in Jammu and Kashmir, a day after four Pakistani rangers were killed in a sharp counter-attack following the death of an Indian jawan in cross-border firing.