After he vowed to trace the Anonymous hacking group.
Hackers from the Anonymous group have reportedly compromised the official website of Singapore Prime Minister Lee Hsien Loong, after he reportedly vowed to trace back the group.
Lee's move came after a Anonymous hackers reportedly threatened to increase cyber attacks against the government in protest against new licensing regulations for news websites.
Hackers posted an image of a Guy Fawkes mask, which is the symbol of the Anonymous group, on the PM's website and wrote: "It's great to be Singaporean today."
However, the affected section was rapidly taken offline after the hacking event became viral in a Facebook posting, while the remaining site was working in normal way.
The Singapore government's Infocomm Development Authority said it was probing the incident.
"The Prime Minister's Office (PMO) main website is still working, and we are working to restore the page that has been compromised," the agency said.
As per the new rules of Media Development Authority rolled out earlier this year, the websites that regularly report on issues associated with Singapore and have major reach among readers necessitate individual licences, while the new move was opposed.
An Anonymous Hacker attacked the website of Singapore's main paper, The Straits Times, who was also responsible for recent hack of the website of the Ang Mo Kio Town Council.
Anonymous group's hackers have compromised several dozens of websites of Australian businesses and Philippine government agencies last week.