Did imprisoned Indonesian graft defendant Gayus flew to Singapore?

Jakarta Post, 2 Jan 2011
An Air Asia passenger said she saw a man resembling imprisoned graft defendant, Gayus H. Tambunan, during a flight to Singapore in September 2010.
The passenger, Devina, wrote a letter to local newspaper Kompas, which then published the letter in its Sunday, Jan.2, edition.
Devina, who departed on Air Asia flight number QZ 7780 on Thursday, Sept.30 at 11:20 a.m., wrote that she first spotted the Gayus look-alike in the Soekarno-Hatta airport waiting room. Full story

Related:
National Police to Investigate Information on Gayus' Alleged Singapore Trip - The Jakarta Globe
Gayus Tambunan Refuses to Comment on Alleged Singapore Trip - The Jakarta Globe
Police to Probe Gayus ‘Singapore Trip’ - The Jakarta Globe
“Gayus” also visited Kuala Lumpur and Macao - The Jakarta Post
Immigration issued Gayus passport to travel abroad - The Jakarat Post
I don't want to ask Gayus about his escapades: Lawyer - The Jakarta Post
Police Confirm Gayus Went to Singapore - The Jakarta Globe