On 28 July 2006, Mahathir was attacked with pepper spray at
Kota Bharu airport in
Kelantan while arriving for a public meeting. Surrounded by about 1,000 cheering supporters upon his arrival at the airport, an unidentified assailant fired pepper spray from a can at him, causing temporary breathing difficulties. Mahathir recovered quickly and did not require hospital treatment. Following the attack,
Abdullah Ahmad Badawi, the then Prime Minister, expressed his regret and anger, emphasizing that those responsible should be severely punished. He also directed the police to take swift action to resolve the matter and prevent any negative implications or rumors, particularly through the Internet. Abdullah also said any Umno member involved in the pepper spray incident faced expulsion from Umno and may be stripped of party posts. Deputy Police Chief
Musa Hassan stated that the attack was triggered by a dispute between two groups of Mahathir's supporters over which vehicles should be used to transport him. On 9 August, businessman Nik Sapeia Nik Yusof was charged in connection with the incident in which Mahathir was attacked with pepper spray. On 14 January 2010, the Kota Bharu Magistrate's Court found Nik Sapeia guilty and sentenced him to six months in jail. However, in 2012, the High Court reversed the decision and acquitted him. On 18 March 2015, The Court of Appeal upheld the acquittal of Nik Sapeia who was accused of pepper-spraying Mahathir in 2006. ==2020==