SUSPICIOUS drone activity has been reported off the Yemen coast just hours after US and UK launched another major series of air strikes against Houthi targets on Monday night.

The United Kingdom Maritime Trade Operations agency said on Tuesday that it had received a report of uncrewed aerial system activity in the vicinity of 46 nautical miles south of Yemen’s Mokha.

No reports of any ships being hit have yet been received.

The drone activity comes as the Houthis issued a defiant response to the latest airstrikes promising that the attacks would “not go unanswered”.

Spokesman for the Yemeni Armed Forces Muhammad Ali al-Houthi said: “We will continue our military operations against the Zionist enemy no matter how aggressively they might bombard Yemen. Our strikes will go on as long as (Israeli) atrocities and genocide in Gaza persist. US-British aggression strengthens the resolve of the Yemeni people to resist. The Americans and British must understand that our people do not know what it means to surrender.”

In the wake of the latest air strikes, which targeted an underground storage site and locations linked to the Houthis’ “missile and air surveillance capabilities”, UK Prime Minister Rishi Sunak has been updating UK Parliament on the scope of operations on Tuesday.

Sunak told members of parliament on Tuesday that, since he updated MPs last week, the government has seen “further evidence that [the strikes] were successful in degrading the Houthis’ military capability”.

“I want to be very clear —  we are not seeking confrontation,” he said, adding that the UK and US acted “in line with international law, in self defence, and in response to an immediate threat”.

The UK government is due to publish legal advice it has received regarding the strikes.