Bikaner, Aug. 24 -- Four people were killed and four more were injured when a Rajasthan Roadways bus collided head-on with a Bolero SUV in Didwana-Kuchaman district on Saturday, police officers familiar with the matter said. Jogendra Singh Rathor, SHO, Jaswantgarh police station said, "The bus from Sikar depot was en route to Jaipur when it rammed into the Bolero at 5.30 am on Saturday. The impact was so severe that the Bolero was reduced to mangled metal, trapping its passengers inside. Rescue teams comprising police and medical staff rushed to the spot and launched an intensive operation. It took nearly an hour of cutting and pulling apart the vehicle to extricate those trapped". Further investigation is underway, police added....