ISLAMABAD, Pakistan — India fired missiles across the border into Pakistani-controlled territory in at least three locations early Wednesday. India said it was striking infrastructure used by militants.

The strikes came amid soaring tensions between the nuclear-armed neighbors over last month’s militant attack on tourists in the Indian-controlled portion of Kashmir. India has blamed Pakistan for backing the militant attack, which Islamabad has denied.

The missiles early Wednesday struck locations in Pakistan-administered Kashmir and in the country’s eastern Punjab province, according to three Pakistani security officials.

India’s Defense Ministry said in a statement Wednesday that at least nine sites were targeted “where terrorist attacks against India have been planned.”

“Our actions have been focused, measured and non-escalatory in nature. No Pakistan military facilities have been targeted,” the statement said, adding that “India has demonstrated considerable restraint in selection of targets and method of execution.”