Israel is assisting Jordanian rescue forces dealing with flash floods that have killed 18 people.

Water from heavy rains caught high school students and their teachers visiting hot springs near the Dead Sea, on that lake’s Jordanian side, Israel Broadcasting Corp. reported Thursday. That incident ended with 18 fatalities and 35 wounded.

Israel’s military said it dispatched a search and rescue team at the request of Jordan’s government.

Several helicopters from the Israeli Air Force’s elite search-and-rescue Unit 669 were sent across the border, the army said.

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The Jordanian request for assistance came at a sensitive time for the relationship of the two countries. On Sunday, Jordan formally notified Israel that it would not renew a land lease deal for an area where Israeli farmers have large plantations. The deal, which had a 25-year expiration date, was part of the 1994 peace agreement between the nations.

Israel, which has advanced desalination and water recycling capabilities, supplies drought-stricken Jordan with water in greater quantities than those mandated by the same agreement. Jordanian officials are upset over Israel’s failure to meet deadlines for a joint desalinization project in Akaba, Ynet reported this week.

“At this time, the soldiers are assisting in the search and rescue efforts for the missing and are doing all they can, despite the weather conditions, to assist the survivors in the flood area,” The Times of Israel quoted an Israel Defense Forces official as saying.

In addition to the military, the Israel Police dispatched a contingent of search-and-rescue and medical specialists, as did the civilian Megillot search-and-rescue unit. The specialists later returned to Israel, though they remained on alert.

Separately, a child was killed by flooding in Israel northern Negev desert that drowned the Bedouin settlement where the child’s family was residing.

Near the Bedouin town of Kuseife, the four-year-old boy was killed when he was swept away by sudden flooding. Rescuers pulled him from the water but were unable to resuscitate him, the Magen David Adom ambulance service said.

The Dead Sea, the lowest point on the earth, is surrounded by steep valley slopes that frequently witness flash floods and landslides.