Singapore man facing trial in Indonesia on terror charges has admitted plotting to crash an aircraft into the city-state's airport in 2001, a newspaper reported.

Mohammad Hassan Saynudin, 35, is the first militant to publicly admit to the plot, according to the Straits Times.

The Wednesday report said imprisoned Mohammad Hassan admitted that he and other members of terror network Jemaah Islamiah planned to hijack a plane from Bangkok and crash it into Changi International Airport. He said Thai authorities thwarted the plot.

Singapore has previously said alleged Jemaah Islamiah leader Mas Selamat Kastari led a failed 2001 plot to crash a plane into Singapore's airport. Mas Selamat escaped Singapore police custody last year and remains at large.