On Saturday, rescue workers recovered the bodies of 11 climbers from Malaysia’s highest peak, the 13,435-foot-high Mount Kinabalu, after a magnitude-5.9 earthquake struck the area on Friday, the Associated Press reports. Thirteen bodies have been recovered in all; six people are still missing.

District police official Farhan Lee Abdullah said that nine of the bodies found on Saturday were flown out by helicopter and two were carried down on foot. “This is a very sad day for Kinabalu,” said Masidi Manjun, the tourism minister for the eastern state of Sabah.

Other climbers, some with broken limbs and one in a coma, returned to the base of the mountain early Saturday morning, the AP reports.

Sabah Deputy Chief Minister Joseph Pairin Kitingan said that the earthquake—which also damaged roads and buildings, including schools and a hospital—was caused by a group of 10 foreigners posed nude at the mountain’s peak. They had “showed disrespect to the sacred mountain,” Kitingan said, and a special ritual must be conducted to “appease the mountain spirit.”

From the AP:

The foreigners, who included two Canadians, two Dutch and a German national, broke away from their entourage and stripped naked before taking photos at the mountain peak on May 30, officials have said.

Five of the tourists are believed to still be in Malaysia and will be barred from leaving on the offense of gross indecency, police have said.

The two bodies recovered on Friday were a 30-year-old local guide and a 12-year-old Singaporean student, police said. The nationalities of those recovered on Saturday have not been identified.

Photo credit: AP Images. Contact the author of this post: brendan.oconnor@gawker.com.