The drone attack on Tel Aviv is the first among an upcoming escalation in Houthi military operations against Israeli cities, a member of the Yemen-based group’s political bureau has said, Al Jazeera reports.

Hazam al-Assad told the Lebanese Al Mayadeen news outlet that Israel should be careful “in all cities” as “what is coming is greater for the enemy as long as there is aggression against Gaza”.

Al-Assad said the Houthis have “entered a new strategic phase in operations against the enemy”, adding that there is “integration with the forces of the resistance fronts in Lebanon, Iraq, and occupied Palestine”.

The Houthis have said they carried out the attack on Tel Aviv, in which one person died, using a new undetectable drone.