Two French-Moroccan men have reportedly been shot and killed after they accidentally crossed Morocco’s maritime border with Algeria on water scooters, according to Moroccan media reports.

The incident took place on Tuesday after five men lost their bearings while exploring the sea on jet skis. France confirmed on Friday one of its citizens had been killed.

Mohamed Kissi told Moroccan news website 360.ma that he, his brother Bilal, and two friends were on vacation and riding jetskis off the waters of the Moroccan town of Saidia as the sun began to set.

“We were low on gas for the water scooters and were drifting. In the darkness we found ourselves in Algerian waters,” Kissi was quoted as saying.

A speedboat with the word “Algeria” emblazoned on the side carrying naval forces approached the group.

After a brief exchange, Kissi said Algerian forces fired on the group, and his brother Bilal and their friend Abdelali Mechouer were killed. Their other friend, Smail Snabe, was wounded and detained by Algerian forces.