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.

India announced a raft of measures to downgrade its ties with Pakistan on Wednesday, a day after suspected militants killed 26 men at a tourist destination in Kashmir in the worst attack on civilians in the country in nearly two decades.

Gunmen killed at least 26 people and injured a dozen others in the disputed Himalayan region of Jammu and Kashmir on Tuesday, a rare assault on tourists in an area fraught by decades of insurgency and opposition to India’s rule.