Bangkok, Dhu-AlHijjah 16, 1437, Sep 18, 2016, SPA -- At least 13 people were killed Sunday when a double-decker passenger boat carrying more than 100 people capsized in a river north of Bangkok, Thai media reported. More than 30 people were hospitalized with injuries, but an unknown number were still missing after the accident, which occurred when the boat was involved in a collision Sunday afternoon while transporting passengers along the Chao Phraya river in Ayutthaya province, 80 kilometers (50 miles) north of Bangkok. It was not immediately clear what the boat had collided with, AP reported. --SPA 16:54 LOCAL TIME 13:54 GMT www.spa.gov.sa/w