A 14-year-old West Bank Palestinian was arrested in Jerusalem after brandishing a knife at a group of teenagers who taunted him in the local bakery where he was employed, police said.

The teenager and his father, who also worked at the bakery, were detained by police after the minor pulled a knife and threatened a group of ultra-Orthodox Jewish teenagers on Bar Ilan Street of the capital.

Police arrived at the scene after receiving alerts of a Palestinian armed with a knife.

The teenage suspect told investigators that the ultra-Orthodox teenagers had teased him and he waved the knife to scare them off.

An initial investigation indicated the suspect and his father did not have a permit to work in Israel, police said.

The owner of the bakery was also detained for employing a West Bank Palestinian who was not permitted to cross the Green Line into Israel.