The Saudi-led coalition backing legitimacy in Yemen stated on Friday that four people had been wounded in the Saudi southern city of Abha by debris of a Houthi drone downed by kingdom's air force.
"The royal air defense system detected early on Friday, at 12:24 o'clock local time, an unidentified object heading for residential areas," said coalition spokesman, and "destroyed the body."
Debris of the wrecked body left "four civilians with medium wounds and some civil vehicles affected," SPA quoted Colonel Turki al-Maliki as saying.
The object was found, by military specialists, to be "hostile Houthi drone of Iranian characteristics."
Coalition "warns the Iranian-backed Houthi terrorist militias" that targeting civilians and using "terrorist patterns in suicide attack will be met with strict deterring means, according to international human law," Maliki added.
No immediate comment has been given by Houthi rebels on the event.
Houthi group has recently tended to use more unmanned aerial vehicles than ballistic missiles in attacking Saudi territories.
Yemen has been racked by an armed conflict that broke out after the Iranian-backed Houthis had ousted the internationally recognized government late in 2014.
The Houthis say they fire ballistic missiles and UAVs at Saudi lands in retaliation to coalition strikes on its forces and civilian targets in Yemen.
Saudi Arabia has been leading a military coalition in Yemen since 26 March 2015, in support of forces loyal to President Hadi, to retake areas controlled by Houthi rebels seen as proxy for Iran in the Arab Peninsula country.
The Yemen's war has left tens of thousands killed, hundreds of thousands injured, and 3 million displaced, pushing the country to the world's worst humanitarian crisis, according to the UN, with most of the population in need for a type of humanitarian aid and immediate protection, including 8.4 million people unsure how to get next meal, and some 2 million children suffering severe shortage of nutrition.