[2] On 13 July 2016 Hafsa Mossi, Burundi representative in the East African Legislative Assembly (EALA), was assassinated in Bujumbura.
Jean Marie Muhirwa was elected to replace her in the EALA, gaining 103 out of the 109 votes cast in the Burundi National Assembly.
[2] On 11 August 2016 the Constitutional Court of Burundi declared that Muhirwa's senate seat was vacant due to his resignation.
[5] In June 2020 Muhirwa was elected by the EALA as one of the two commissioners for Burundi, replacing Leontine Nzeyimana, to serve in the Assembly for the next two and a half years.
[7] In February 2024 Muhirwa was National Secretary of the CNDD FDD party in charge of political and legal issues, and also godfather of Mwaro Province.