The Philippine Space Agency (PhilSa) cautioned the public on the unburned debris from a Chinese rocket that is projected to fall within the vicinity of Recto bank located in the West Philippine Sea.

In an advisory, the PhilSa said the rocket debris may fall approximately 137 kilometers from Ayungin Shoal and 200 kilometers from Quezon in Palawan.

"While not projected to fall on land features or inhabited areas within the Philippine territory, falling debris poses danger and potential risk to ships, aircraft, fishing boats, and other vessels that will pass through the drop zone,” the agency said.

PhilSa noted that actual drop zone areas are subject to change due to “earth’s rotation, weather, and climate conditions,” adding that there is a possibility that the debris may also float around the area and could be washed toward nearby coasts.

The agency reminded the public to immediately report to the local authorities if suspected floating debris is seen at sea.

It also warned not to retrieve or come in close contact with the materials as it contains toxic substances.

PhilSa said the expected debris will come from China's Long March 3B rocket that is scheduled to launch between 12:33 pm and 1:10 pm Philippine Time at Xichang Satellite Launch Center in Xichang, Sichuan Province, China.