China appears to have installed weapons, including anti-aircraft and anti-missile systems, on all seven of the artificial islands it has built in the South China Sea, a U.S. think tank reported on Wednesday, citing new satellite imagery.

Axar.az informs, quoting the Reuters, Asia Maritime Transparency Initiative (AMTI) said its findings come despite statements by the Chinese leadership that Beijing has no intention to militarize the islands in the strategic trade route, where territory is claimed by several countries.

AMTI said it had been tracking construction of hexagonal structures on Fiery Cross, Mischief and Subi reefs in the Spratly Islands since June and July. China has already built military length airstrips on these islands.

"It now seems that these structures are an evolution of point-defense fortifications already constructed at China’s smaller facilities on Gaven, Hughes, Johnson, and Cuarteron reefs," it said citing images taken in November. "This model has gone through another evolution at (the) much-larger bases on Fiery Cross, Subi and Mischief reefs."