Liberian former warlord Prince Johnson, who oversaw the brutal murder of former president Samuel Doe as civil wars rocked the country before later serving as a senator and political kingmaker, has died at the age of 72.

In a condolence message to his family, President Joseph Boakai – who Johnson supported in his presidential campaign last year – described him as “a figure who played a pivotal role in Liberia's complex historical evolution and contributed to national discourse through his service in the Senate”.

Former Liberian warlord Prince Johnson, a key player in the country's back-to-back civil wars from 1989 to 2003, died Thursday aged 72, officials from his party and the Senate told AFP.