Hezbollah said its fighters were engaging Israeli forces inside Lebanon on Wednesday, reporting ground clashes for the first time since Israel began pushing into its northern neighbor in a campaign to hammer the Iran-backed armed group.

The Israeli military said regular infantry and armored units were joining its ground operations in Lebanon, a day after Israel was attacked by Iran in a strike that raised fears the oil-producing Middle East could be engulfed in a wider conflict.

An Israeli team commander was killed in Lebanon, the Israeli military said.