KATHMANDU: Two persons have sustained injuries after an old building that was being demolished collapsed near Chabahil Chok, in Kathmandu, today. Both the injured persons, a labourer working at the site and a pedestrian, were rushed to Chabahil-based health facilities where they are undergoing treatment, according to an eye-witness. A team of security personnel are currently at the site for rescue operations and to ascertain whether there are others trapped in the debris.