Fighting also raged between Yemen's government forces and the Houthis elsewhere including in the provinces of Jawf and Taiz, military officials say.
The Houthis have targeted the UAE capital, Abu Dhabi, as well as Dubai, after the Emirates ramped up its military operations in Yemen.
The strikes by the Saudi-led coalition on a prison in Houthi territory killed at least 70 detainees, wounded dozens others, and they caused disruption of internet services in the war-torn country.
Gruesome scenes came to light as rescue workers pulled bodies from destroyed prison building and piled up mangled corpses, according to footage released by the Iran-backed Houthi rebels.
Yousef al Otaiba, the Emirati ambassador to the US, confirms that Houthis used missiles along with drones in an attack on Abu Dhabi this week that killed three people and set off fires at a fuel depot and an international airport.
Hundreds of civilians were killed and thousands displaced in Yemen over the past month, and conflict continues to escalate, while aid is coming short.
The friendly fire incident follows an escalation in fighting between the Houthis and Yemeni government forces around the central city of Marib.
The Houthi movement said earlier this month that the capital's airport had been put out of operation after air strikes carried out by the Saudi-led coalition fighting in Yemen.
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The seizure of arms is the latest as western nations continue accusing Iran of smuggling illicit weapons and technology into Yemen.
Families on reduced aid will receive barely half of the World Food Programme's daily minimum ratio but the five million people at immediate risk of slipping into famine will keep the full ratio.
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