The Saudi-led coalition carried out two air strikes on the defence ministry in Yemen's rebel-held capital Sanaa late Friday, witnesses and rebel media said, without reporting casualties.
Warplanes continued to circle in the skies above Sanaa after the strikes, the witnesses added.
The Huthi rebel media outlet Al-Masirah also reported the two air strikes.
The coalition has targeted the defence ministry in the past, leaving it heavily damaged, but the fresh strikes come amid a ratcheting up of tensions between Saudi Arabia and its rival Iran, which backs the Huthi rebels.
The coalition shut down Yemen's borders earlier this week after Saudi forces on Saturday intercepted a ballistic missile fired by the Huthis near the Riyadh airport