In Jammu and Kashmir, four persons killed on the spot while thirty others injured, some of the seriously in a road accident on Jammu-Srinagar National Highway in Ramban district today. <br/><br/>The accident occurred when a passenger bus on its way from Jammu to Doda rolled down into a 100 feet deep gorge while the driver was negotiating a curve at Kothari, about 5 kms away from famous tourist spot of Patni Top. <br/><br/>The injured were rushed to hospital at Batote from where eight seriously injured were shifted to Government Medical College Jammu for specialized treatment.