The gas pipeline blast in Putra Heights yesterday left a crater with a depth of 10m, says Subang Jaya police chief Wan Azlan Wan Mamat.

Wan Azlan said the crater’s width measured about 21m by 24m, Bernama reported.

The fire and rescue department sent a team at 3.30pm to inspect the crater, along with officers from Petronas, the occupational safety and health department, and minerals and geoscience department.

“In addition to the inspection of the affected area, we have also deployed a team from Petronas to monitor all four gas pipeline valves on-site, manually checking to ensure that no gas pressure remains,” said fire and rescue department director-general Nor Hisham Mohamad.

“This process is being conducted around the clock, 24 hours a day,” he added.

The fire, which broke out yesterday morning along Jalan Putra Harmoni, engulfed a 500m section of a gas pipeline, leaving 111 people injured — with many requiring hospitalisation for burns and respiratory issues.

A total of 399 vehicles were affected, with 225 burnt and 174 damaged. Some 538 residents from 120 families have also been forced to seek shelter at two temporary relief centres.