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's Prime Minister Narendra Modi says the gunmen behind a terrorist attack on tourists in the Kashmir region "will not be spared!"

Following the Pahalgam attack, over 1,500 people have been detained in Kashmir Valley. The attack, which killed 26 people, is believed to have been carried out by Pakistani terrorist group TRF.