In the aftermath of the killings, a group of Hutu intellectuals wrote an open letter to Pierre Buyoya, asking for more representation of the Hutu in the administration. They were arrested and jailed. A few weeks later, Buyoya appointed a new government, with an equal number of Hutu and Tutsi ministers. He appointed Adrien Sibomana (Hutu) as Prime Minister. Buyoya also created a commission to address issues of national unity. In 1992, the government created a new constitution that provided for a multi-party system, but a civil war broke out.