China CCG Patrols Continue at Scarborough Shoal as Philippines Probe Intensifies; China Issues No Response to Satellite Imagery Reports

China's Coast Guard vessels maintained a continuous patrol posture at Scarborough Shoal on June 4, 2026, concurrent with the intensifying Philippine and international media investigation into satellite imagery showing a possible structure at the shoal's lagoon entrance. China's defense ministry and Foreign Ministry maintained complete silence on both the satellite imagery and the Philippine government probe announced June 3 — consistent with Beijing's standard practice of neither confirming nor denying gray-zone maritime activities before they are formally established as permanent fixtures. The sustained CCG presence at Scarborough follows the June 1 PLA Southern Theater Command 'combat readiness patrols,' the May 31 16+ vessel CCG-militia dual-ring perimeter, and the April 2026 352-meter floating barrier — all part of a coordinated, layered escalation at the shoal. Security analysts and former Supreme Court Justice Antonio Carpio continued to warn that China's pattern at Scarborough mirrors the trajectory used at Fiery Cross, Subi, and Mischief reefs in the Spratlys, where installations escalated from temporary to permanent to militarized. The Philippines' NTF-WPS was conducting overflights and satellite analysis tasking to build a documented record of the shoal's condition, essential for any future legal or diplomatic action.