The Israeli Army Sunday arrested a suspect accused of aiding the killers of three Israeli teenagers in the West Bank.
Husam Dofsh was arrested in Hebron city, an Israeli defence official told Xinhua.
The manhunt continues for the two prime suspects from the Hamas movement, Marwan Kawasmeh and Amar Abu-Isa.
Israeli Security Service Shin Bet said it was investigating Dofsh's involvement in the killings.
Eyal Yifrach (19), Gil-Ad Sha'ar (16) and Naftali Frankel (16) were kidnapped from Hebron in West Bank June 12.
Last week, they were found dead near Hebron and brought to rest in a funeral attended by tens of thousands of Israelis.
Since the abduction, more than 420 Palestinian suspects have been arrested and four Palestinians killed in clashes with Israeli security forces.