Seafield Sri Maha Mariamman Temple

The initial riot began 2 a.m. 26 November when provocateurs in a “trance-like state” entered and were out to hurt people in the temple. The Save Seafield Sri Maha Mariamman Temple task force chairman, S.Ramaji, claimed that approximately 250 people of Malay ethnicity barged the temple premise wielding knives, axes, rakes, parangs and wooden sticks ordering all within the temple to vacate the premises immediately.[15] Police arrived two hours later and Selangor Police Chief reported that 17 suspects were arrested.[16] The altercation resulted in 18 vehicles being set ablaze. It was later reported that a law firm representing the developer had hired thugs to 'secure' the temple with the firm denying the accusations.[17] The Inspector General of Police on 29 November 2018 reported that a lawyer, who was the advisor to the developer, was detained under suspicion of being connected to the unrest.[18]

In the late evening of 26 November, a huge crowd gathered at the temple which led to a subsequent riot which also led to a group attacking the premises of the developer[19][20] some 1 km away from the temple.

The second riot also led to the critical injury of an emergency responder, Muhammmad Adib Mohd Kassim, a firefighter based at the Subang Jaya Fire Station (Balai Bomba Subang Jaya),.[21][22] Adib was one of nine responders who responded to the second riot but were attacked upon arrival and the only responder to suffer injuries when his partner Hazim inadvertently left him in the open.[23][24][25] Subsequent claims by eyewitnesses claimed that the fireman was actually injured as a result of a fire engine reversing into Adib[26] which was refuted by the Fire and Rescue Department Director-General, Mohamad Hamdan Wahid.[27][28]

Adib was initially helped by some devotees present at the temple and was later sent to the Ramsay Sime Darby Medical Centre.[29] Following a deterioration in health, Adib was subsequently transferred to Institut Jantung Negara (IJN) and required the assistance of a ECMO machine.[30][31] While visiting the critically injured fireman, Minister of Housing and Local Ministry Zuraida Kamaruddin, was reported to have stated that Adib has "hit and stomped on."[25] Minister of Health, Dr.Dzulkefly Ahmad, reported that the fireman was recovering well following his treatment.[32] He was also visited by the Sultan of Kedah[33] as he hailed from the state of Kedah.

Although initially reported to be recovering well, Adib succumbed to his injuries on the evening of 17 December while still being under intensive care at IJN.[34] He was then laid to rest in the As-Saadah Mosque Muslim cemetery in Kampung Tebengau, Kuala Kedah on 18 December 2018.[35] His name and service number were then inscribed on the Fire Department's 'Fallen Heroes' monument in Kuala Kubu Bharu, Selangor to commemorate the service and sacrifice of the late fireman.[36]

Following the riots, Minister of Unity & Social Wellbeing, P. Waytha Moorthy reported that the police response was poor and underwhelming, resulting in the riot getting out of control. Waytha Moorthy also took president over a media conference at the Parliament lobby on 26 November 2018 and claimed the Subang Jaya District Police issued a false statement that the cause of the riot was a misunderstanding between two Indian groups over the temple's relocation.[37] His statement was deemed inciteful, resulting in investigations being launched against him by the authorities and opposition lawmakers called for his resignation.[38][39]

Following protest gatherings calling for his resignation, the Prime Minister responded that Waytha Moorthy will remain as the PM's prerogative.[40] As a result, Jaringan Melayu Malaysia organized a protest in Klang on the 25th December 2018,[41] one week after the death of Adib, including the a call by Jaringan Melayu Malaysia President Azwanddin Hamzah to 'storm police stations' if no action was taken.[42][43][44]