In the same year, prime minister Sidqi Pasha returned from negotiations in London with a draft treaty that the nationalist groups found absolutely unacceptable. Violent student riots broke out. Members of the Brotherhood's secret apparatus started to carry out attacks on Britons as well as on Egyptian police stations, and continued to do so over the next few years. The government responded to this escalating violence with harsh repressive measures, including a wave of arrests among the Brothers and other nationalist groups. Rioting continued throughout 1946, and in December the government resigned.