A Saudi border post in the kingdom's southern Jazan region came under shell and rocket fire from Yemeni territory yesterday.
One soldier was killed and three others wounded, an interior ministry spokesman was quoted as saying by the official SPA news agency.
In a separate incident, a Saudi soldier operating along the border with Yemen was killed when his vehicle overturned, the spokesman added.
Riyadh said Sunday that rocket fire from Yemen had killed a Saudi general, the highest-ranking officer to die in border attacks since a Saudi-led coalition began air strikes against Iran-backed rebels across Yemen in March.