SUBANG JAYA, April 7 -- Authorities say the Petronas gas pipeline involved in the Putra Heights explosion must be fully exposed before determining whether a contractor's excavation works interfered with it.

"The physical condition of this pipe does not show any obvious disturbance. These excavation works were carried out and monitored by the police together with Petronas, Public Works Department (PWD), Department of Survey and Mapping Malaysia (JUPEM), the Department of Occupational Safety and Health (DOSH), Tenaga Nasional Berhad (TNB), Air Selangor and the contractor," said Selangor police chief Datuk Hussein Omar Khan during a press conference here yesterday.

"Whether the contractor's excavation works disturbed the pipeline route can...