At least three people have been killed and 22 injured in lightning strikes during a sudden thunderstorm over mountains in southern Poland.
The lightning struck a group of tourists at the summit of Giewont, a popular peak in the Tatra range, mountain rescuers said.
Some Polish media reports said a 13-year-old boy was among the victims.
The storm is said to have taken the hikers by surprise as they set off in favourable weather conditions.
There were reports of casualties in different parts of the mountain range. Four rescue helicopters were sent to the area, local media reported.
“We have a very severe situation,” the head of the voluntary mountain rescue team was quoted as saying.
The worst incident occurred at the top of the 1,894m (6,214ft) Giewont mountain, a popular destination for hikers and where a metal cross is sited.
A lightning bolt struck the 15m (49ft) high structure at a time when a large number of hikers were at the summit, the TVN television channel said.
A resident in the mountain resort town of Zakopane in the Tatra region posted a video showing the thunderstorm.
Local radio in the city of Krakow posted video of a rescue helicopter on its way to Giewont.