be granted for political offences. The government also committed to review its security legislation to "ensure normal and free political activities". Pretoria Minute: August 1990 Tensions between the parties were piqued in late July, when several senior members of the ANC were arrested because of their involvement in Operation Vula, an ongoing clandestine ANC operation inside the country. Police raids also turned up Operation Vula material which de Klerk believed substantiated his concerns about the sincerity of the ANC's commitment to negotiations and about its intimacy with the South African Communist Party (SACP). Following another meeting between Mandela and de Klerk on 26 July, intensive bilateral talks were held on 6 August in Pretoria, resulting in another joint communiqué, the Pretoria Minute. The minute reiterated and extended earlier pledges by the government to consider amending its security legislation and lifting the state of emergency (then ongoing only in Natal province); and it also committed the government to releasing certain categories of political prisoners from September and indemnifying certain categories of political offences from October. Most significantly, however, the minute included a commitment to the immediate and unilateral suspension of all armed activities by the ANC and its armed wing, Umkhonto we Sizwe. D. F. Malan Accord: February 1991 The Pretoria Minute was followed on 12 February 1991 by the D. F. Malan Accord, which contained commitments arising from the activities of the working group on political offences, and which also clarified the terms of the ANC's suspension of armed struggle. It specified that the ANC would not launch attacks, create underground structures, threaten or incite violence, infiltrate men and materials into the country, or train men for armed action inside the country. This concession was already unpopular with important segments of the ANC's support base, and the situation was further unsettled by the continuation of political violence in parts of the country, particularly in Natal and certain Transvaal townships, where ANC and IFP supporters periodically clashed. In early April 1991, the ANC imposed an ultimatum, threatening to suspend all negotiations unless the government took steps to reduce the violence. Its case was strengthened by a major scandal in July 1991, known as Inkathagate, which unravelled after journalist David Beresford published evidence, obtained from a Security Branch informant, that the government had been subsidising the IFP. National Peace Accord: September 1991 On 14 September 1991, twenty-six organisations signed the National Peace