Thousands massed in the Iranian capital for the funeral of senior Revolutionary Guards commander Razi Moussavi, three days after he was killed in what Tehran says was an Israeli strike, AFP reports.

The crowd in Tehran’s central Imam Hossein square chanted “Death to Israel” and “Death to America”. Many of the mourners were waving yellow flags imprinted with the message “I am your opponent”, a reference to Israel.

Moussavi’s killing in Syria came at a time of sharply heightened regional tensions over the Israel-Hamas conflict since early October.

IRGC spokesman Ramezan Sharif warned that “our response to Moussavi’s assassination will be a combination of direct action as well as (from) others led by the Axis of Resistance”.