for self-governance at the Farrer Park Field. On 18 March 1956, some 20,000 people gathered at the Kallang Airport complex for a merdeka (Malay for "freedom") rally organised by then-Chief Minister David Marshall. The event later turned into a riot, causing at least 50 cases of injuries. This riot discredited Marshall in the eyes of the British, thereby hindered Singapore's independence progress and led to Marshall's subsequent resignation. Described as "the worst and prolonged in Singapore's post-war history", the infamous 1964 Singapore race riots broke out in Kallang on 21 July 1964, at the intersection of Kallang Road and Padang Jeringau, around the former Kampong Soo Poo. On 23 February 1970, a time capsule was buried at the old National Stadium by then-Minister for Finance Goh Keng Swee. The capsule was never found despite more than three years of search. On 15 February 2016, a new time capsule was laid underground at the Singapore Sports Hub. It is expected to be unearthed in 2040. The old National Stadium that once stood on the same plot of land as the current Singapore Sports Hub was the ceremony venue for the Southeast Asian Games in 1973, 1983 and 1993. The old National Stadium hosted the National Day Parade (NDP) a total of 18 times (in 1976, 1980, 1985, 1986, 1988, 1989, 1991, 1992, 1994, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004 and 2006). From 1986 to 2000, former Singapore Prime Ministers Lee Kuan Yew and Goh Chok Tong held their annual National Day Rally at the Kallang Theatre. On 20 April 2004, a section of Nicoll Highway collapsed in an accident now known as the Nicoll Highway collapse. The road itself and surrounding area sunk in, snapping gas, water and electricity cables, thereby cutting off power in the nearby Suntec City and Marina Bay areas. Tenants and residents of Golden Mile Complex were evacuated. The completion of the Circle Line was pushed back by a year, and the original site of Nicoll Highway MRT station which was 100 metres away from the current station had to be abandoned. The section of tracks between Promenade MRT station and Stadium MRT station had to be realigned. The collapse killed four people. During the 2010 Summer Youth Olympics, the archery, tennis and football games were held at Kallang Field, Kallang Tennis Centre and Jalan Besar Stadium respectively. The opening and closing ceremonies of the