They were all handed over to the Shin Bet for interrogation.
Israeli army spokesperson Ron Kochav told reporters that two of those arrested were believed to have carried out the shooting itself, while the others were suspected of having assisted or otherwise being involved in the group.
An Israeli settler was killed and two others were lightly hurt on Thursday as their car came under fire near the illegal Homesh outpost.
Hamas resistance movement said the attack proves that Palestinians are continuing the struggle to liberate their land.
Source: Al Manar