A man has opened fire inside a school in the Saudi capital, Riyadh, leaving two people dead.
The school, opened in 2000, is owned and operated by a company that belongs to Saudi billionaire Prince Alwaleed bin Talal.
Talal al-Maiman, the CEO of Kingdom Holding and chairman of Kingdom Schools, said a Saudi and a Palestinian national were killed in the shooting.
Earlier Saudi media reports said the victims were a Saudi man and the American manager of the school.
Maiman said the shooting was "a case of a disgruntled employee." He added that it was carried out by "an Arab national who was dismissed from the school four years ago on the basis of anger issues and an unstable personality."
Saudi newspaper Okaz had said the assailant was an Iraqi teacher who had been sacked from the school.
Earlier, the US embassy in Riyadh said in a message posted on Twitter that there were no students present during the assault. Most schools in Saudi Arabia are off for holiday season.
The chairman of the school said the situation had been under control as of mid-afternoon.
Sabq online newspaper, which is close to Saudi authorities, had reported that police forces were looking for a suspect who fled the shooting, adding that it was apparently caused by "previous disagreements."
A spokesman for the Saudi Interior Ministry said it was a "criminal case."
The shooting in a Saudi school comes as the kingdom has been hit by a year of strikes and protests over unpaid wages amid a plunge in global oil prices and the kingdom’s multi-billion-dollar campaign against Yemen, which have struck a direct blow to the country’s economy.
Foreigners account for nearly 30 percent of Saudi Arabia’s 27-million-strong population, according to 2010 census figures.