Iran's Revolutionary Guards chief Hossein Salami warned Thursday of further retaliation against Israel if it attacks Iranian targets, which Israel has vowed to do after Iran's missile attack on October 1.

 Salami said at the funeral of a Guards general killed in an Israeli strike last month, stressed that if Israel makes a mistake in attacking its targets, whether in the region or Iran, it would strike again.

Abbas Nilforoushan, a top commander in the Islamic Revolutionary Guard Corps Quds Force foreign operations arm, was killed on September 27 alongside Hassan Nasrallah, the chief of Lebanon's Hezbollah, in an Israeli strike on south Beirut.

Funeral services for Nilforoushan, whose body the Guards said was recovered last week, began on Monday in Iraq, as his body was moved to Iran for burial in his hometown of Isfahan later Thursday.

During his speech, Salami criticised as "not reliable" the THAAD missile defence battery which the Pentagon on Tuesday said arrived in Israel, along with about 100 American troops to operate it.

According to its manufacturer Lockheed Martin, the Terminal High Altitude Area Defense system is designed to intercept targets outside and inside the atmosphere.

Salami's remarks came as Iran's Foreign Minister Abbas Araghchi intensified diplomatic efforts on ways to contain the conflicts in Gaza and Lebanon from spreading across the region.

Araghchi has over the past nearly two weeks visited Lebanon, Syria, Saudi Arabia, Qatar, Iraq, Oman and Jordan.

He is currently in Egypt and is scheduled to head to Turkey afterwards.

Meanwhile, Iran has said its October 1 missile barrage, most of which was intercepted by Israeli air defences, according to Israel, was in retaliation for the killing of Nilforoushan, Nasrallah, and the political chief of the Palestinian movement Hamas.