The source said 18-year-old Hijazi Al-Nawag'a was left with a broken hand as a result of the assault and was taken to the Abu Al-Hassan Hospital in Yatta for treatment.
Ra'fat Makharmeh, 20, and Muhammad Makharmeh, 20, were also beaten while Muhammad was later detained.
An Israeli military spokeswoman confirmed the detention in the area, but said the army "received no complaints of violence."
