JERUSALEM (AP) — An Israeli official says a number of Jewish suspects have been arrested in the killing of a Palestinian teenager, which set off days of violent protests in Arab areas of Jerusalem and northern Israel.

Mohammed Abu Khdeir, 16, was abducted last week and his charred body found a short while later in a Jerusalem forest in what Palestinians say was a revenge killing for the earlier deaths of three Israeli teens.

The Israeli official said Sunday that investigators have concluded the killing was driven by "nationalistic" motives. There were no further details on the identities of the suspects.

The official spoke on condition of anonymity because the investigation was continuing.