Satellite Image Shows Possible Chinese Structure on Disputed Reef

Satellite imagery has captured an unidentified reflective object at the entrance to Scarborough Shoal’s lagoon, reigniting concerns in Manila and among regional security analysts that China may be tightening its grip on one of the South China Sea’s most sensitive flash points.

Images captured between May 26 and 28 by the satellite imagery platform SkyFi and shared with the Stanford‑affiliated maritime analysis group SeaLight show the object positioned at the southern mouth of the lagoon. Analysts estimate it to be less than 10 meters (32 feet) in diameter, though it remains unclear whether the structure is fixed to the reef or floating like a buoy, SeaLight said.

If confirmed as a permanent installation, the object would mark a potentially significant development at Scarborough Shoal-known as Bajo de Masinloc in the Philippines and Huangyan Island in China-where Beijing has exercised de facto control since a tense standoff with Manila in 2012, maintaining a continuous coast guard presence, challenging Philippine government patrols, ejecting Philippine anglers from the area and occasionally deploying floating barriers at the entrance.

“If this object is confirmed to be a fixed installation, it would raise questions about compliance with the 2002 Declaration on the Conduct of Parties in the South China Sea, which calls for self‑restraint and avoiding actions that complicate disputes or alter the status quo on contested, uninhabited features,” SeaLight Director Ray Powell said in a statement.

Efforts to verify the nature and origin of the object are ongoing, Philippine officials say. Speaking on the sidelines of the Shangri-La security summit in Singapore, Philippine Defense Secretary Gilberto Teodoro Jr. said there was “raw information” that China had built structures at Scarborough Shoal.

“Up to now I have not received any confirmation what that is or what the nature of that thing is,” he said during a closed-door meeting with reporters attended by Newsweek. He added that the country’s National Security Council has been tasked with leading the investigation.

Newsweek has contacted the National Security Council of the Philippines for comment by email.

This is a developing story. It will be updated with additional information.

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This story was originally published June 2, 2026 at 12:44 AM.