During a group match between
Singapore and
Malaysia at the
Singapore National Stadium, irate Singaporean fans began throwing bottles of water and toilet rolls on the pitch and players gate tunnel at the end of the match due to what was seen as awful decision-making by Oman referee
Ahmed Al-Kaf, who awarded the Malaysian side a
penalty kick resulting in an advantage for them. Other incidents occurred soon during the first semi-final between
Malaysia and
Vietnam in
Shah Alam Stadium, where some of the Malaysian fans were seen pointing
green laser lights on the field, as recorded on the match video in television camera. The laser incident is a continuation from Malaysian hooligans, as it also happened during the previous edition of AFF Championship semi-final against Vietnam and in the final against Indonesia in
2010. At the end of Malaysia 1–2 loss to Vietnam, some Malaysian
hooligan fans began attacking Vietnamese fans, resulting in injuries. This was heavily criticised by the Vietnamese side for the rioting shown by some of the Malaysian supporters. As a result, the website of the
Football Association of Malaysia (FAM) had been hacked in a
denial of service attack, perhaps from Vietnam. Other Malaysian supporters together with the Malaysia
Minister of Youth and Sports,
Khairy Jamaluddin condemn the hooligan fans attitude and has offer their apologies to all Vietnamese fans, adding that five of the perpetrators had been arrested. Another nine people's was arrested for the same offence between 11 and 12 December. The
Philippines team received a
death threat before their 2nd semi-final match against
Thailand. Sources say the threat has something to do with the scuffle during 1st leg between Filipino defender
Amani Aguinaldo and Thai striker
Adisak Kraisorn, which led to Adisak being red-carded and suspended for the 2nd leg. In the semi-final between Malaysia and Vietnam, the Vietnam had won the first-leg in Malaysia with a 2–1 score. However, in the second-leg played in Hanoi, Vietnam lost 2–4, thus losing 4–5 on aggregate with Malaysia advancing to the finals. After that defeat, the
Vietnam Football Federation (VFF) launched a probe into the defeat, citing potential match-fixing due to the seemingly apathetic performance of the players compared to the first-leg. However, the AFF said that the match was not fixed and went on to say that through Swiss-based sports integrity specialist
Sportradar, no unusual betting had taken place during the match. ==References==