At least 12 CRPF personnel were killed in Jammu and Kashmir’s Pulwama district in the afternoon when a blast ripped through the bus they were travelling in, officials said. The Jaish-e-Mohammed has claimed responsibility for the incident, they said. The casualties are likely to go up. Several people were injured in the blast. The vehicle was blown up on the Srinagar-Jammu highway in Awantipora area of the district, a police official said.