KATTANKUDY, Sri Lanka—Sri Lankan police on Sunday discovered a 10-acre camp in the eastern town of Kattankudy, where Islamist extremists linked to the deadly Easter attacks are believed to have practiced shooting and bombmaking.

A soldier stands guard outside a training camp allegedly linked to Islamist extremists, in Kattankudy near Batticaloa, Sri Lanka, on May 5, 2019. Danish Siddiqui/Reuters