CNN  — 

India said early Wednesday it had launched a military operation against Pakistan, hitting “terrorist infrastructure” in both Pakistan and Pakistan administered-Kashmir, in a major escalation of tensions between the two neighbors.

“These steps come in the wake of the barbaric Pahalgam terrorist attack in which 25 Indians and one Nepali citizen were murdered,” India’s Ministry of Defense said in a statement, referring to an attack last month tourists in India-administered Kashmir.

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

India said nine sites in total were targeted.

Multiple loud explosions have been heard in Pakistan-administered Kashmir, according to a CNN journalist.

Pakistan’s military said three locations had been struck with missiles.

“Pakistan will respond to it at a time and place of its own choosing,” Pakistani military spokesperson Ahmed Sharif Chaudhry told Geo TV. “This heinous provocation will not go unanswered.”

This is a developing story and will be updated.