WASHINGTON, April 5 (Reuters) – The United States is on high alert and preparing for a possible attack by Iran targeting Israeli or American assets in the region in response to Israel’s strike on the Iranian embassy in Syria, a U.S. official said on Friday.

“We’re definitely at a high state of vigilance,” the official said in confirming a CNN report that said an attack could come in the next week.

Suspected Israeli warplanes bombed Iran’s embassy in Damascus on Monday in a strike that killed an Iranian military commander and marked a major escalation in Israel’s war with its regional adversaries.

Iran’s Islamic Revolutionary Guard Corps has said that seven Iranian military advisers died in the strike, including Mohammad Reza Zahedi, a senior commander in its Quds Force, which is an elite foreign espionage and paramilitary arm.

Iran has said it reserves the right “to take a decisive response.”

U.S. President Joe Biden discussed the threat from Iran in a phone call on Thursday with Israeli Prime Minister Benjamin Netanyahu.