Members of the Malayan Communist Party kill three British plantation managers in Sungai Siput; in response, British Malaya declares a state of emergency.

Sungai Siput (U) (Jawi: ; Tamil: ) is a town, mukim in Kuala Kangsar District, Perak, Malaysia, covering 155.141 hectares, 61.5% of the total area of Kuala Kangsar. It is located about 25 km from state capital, Ipoh and 20 km from royal town of Kuala Kangsar. Sungai Siput falls under the management of the Kuala Kangsar Municipal Council.

The Malayan Communist Party (MCP), officially the Communist Party of Malaya (CPM), was a Marxist–Leninist and anti-imperialist communist party which was active in Malaysia from 1930 to 1989. It was responsible for the creation of both the Malayan Peoples' Anti-Japanese Army and the Malayan National Liberation Army. The party led resistance efforts against the Japanese occupation of Malaya during World War II, and later fought a war of national liberation against the British Empire during the Malayan Emergency. After the departure of British colonial forces from the Federation of Malaya, the party fought in a third guerrilla campaign against the Malaysian government in an attempt to create a socialist state, before surrendering and dissolving in 1989.