At least 26 people were killed and 17 others wounded when gunmen opened fire on tourists in Indian-controlled Kashmir, the worst assault in years targeting civilians in a restive region that has seen an anti-India rebellion for more than three decades.

The US travel advisory states, “Terrorist attacks and violent civil unrest are possible in the union territory of Jammu and Kashmir. Do not travel to this state (with the exception of visits to the eastern Ladakh region and its capital,

It was the deadliest attack against civilians in years in Kashmir, a region claimed by both India and Pakistan that has been racked by violence for decades.