A United States citizen, working as a teacher, in a private English language school in the Yemeni capital Sanaa, has been detained, witnesses and a security official said.

"Peter Willems was teaching his Yemeni students in the class, when 10 armed men in plain clothes stormed the school and forced him out into one of their cars on Tuesday," a security guard of the school said.

A security official, loyal to Shiite Houthi armed group, which is controlling Sanaa and government institutions, told Xinhua that, "the American teacher was held inside the building of the National Security Service (intelligence), in the old city of Sanaa, to ensure that the Saudi-led coalition war planes will not hit the building or the old city again."

On Monday, fighter jets from the coalition hit the intelligence building 10 times, causing large damage to nearby residents' homes, that led to the death of a 50-year-old husband, and his wife, according to the residents, medics and officials.

Houthi-controlled Saba news agency cited a security official of the intelligence service as saying, "the service is not a military establishment to be repeatedly targeted by Saudi aggression war planes, but a security apparatus specialising in combating terrorism and is holding al-Qaeda terrorist suspects and foreigners, on charges of spying, including Americans."