India, March 7 -- Hundreds of minority Shiites rallied on Friday in Pakistan's capital and elsewhere in the country to denounce the killing of Iran's Supreme Leader Ayatollah Ali Khamenei in US-Israeli strikes, as the US Embassy in Islamabad issued a security alert warning Americans of possible violence.

Amid heavy police presence, about 300 protesters staged a sit-in in Islamabad, holding posters of Khamenei and chanting "Death to America" and "Death to Israel." Islamabad police had parked shipping containers on roads leading to the US Embassy in Islamabad to prevent any potential escalation.

Pakistani authorities said the protesters had agreed not to march toward the embassy in Islamabad, located about 3 kilometres from the sit-in. Th...