A boat capsized in a river in the northern state of Punjab and at least 13 people drowned, United News of India reported today. The accident occurred in Ferozpure district late Wednesday, the news agency said. The boat carrying 35 people overturned in a river between the villages of Khidar Pindi and Casuwala, about 220 miles northwest of New Delhi, the agency said. The remaining passengers were rescued, the agency said.