A Palestinian teen was arrested near the Cave of the Patriarchs in Hebron after he was found to be concealing a knife.
The incident on Tuesday is the third in the last week, according to Israel Police.
The boy, 15, had been hiding the knife under his shirt, and when he was asked to lift his shirt he pulled it on the police officers at the checkpoint.
He was arrested and taken for questioning with no shots fired, according to the police.
The other two incidents also occurred at checkpoints near the flashpoint Tomb of the Patriarchs, known by Muslims as the Ibrahimi mosque.