After the United States and the United Kingdom, embassies of Saudi Arabia and Australia on Monday issued advisory to their citizens and government officials living in Pakistan’s Islamabad to “limit their movement and increase vigilance” amid the rising terror threat.

Saudi Arabia has warned its nationals to “be cautious” and not step out except for emergency purposes. “Security of Islamabad has been placed at the highest level,” the advisory said. It has also asked Saudi residents in the city to contact the embassy and consulate in case of an emergency.