First lady Melania Trump visits American International School in Riyadh, Saudi Arabia, May 21, 2017. (Xinhua/Reuters Photo)

RIYADH, May 31 (Xinhua) -- Saudi security authority launched an investigation into the murder of a local and an American inside a famous private school in Riyadh on Wednesday morning, Okaz online news reported.

The report confirmed that the killer who fled the scene is an Iraqi teacher who was sacked and he entered the school with his gun and shot dead the American principal who was originally a Palestinian and Saudi teacher.

An Asian worker was injured too. Security authorities launched manhunt for the suspect.

No official confirmation was made yet about the case.