In 1972, Karume was assassinated, and Babu along with 40 other Umma Party members were jailed for alleged involvement, despite a lack of evidence, leading to death sentences three years later, but were finally released after an international campaign.
Karume's assassination in 1972 led to the imprisonment of Babu and 40 other Umma Party members on suspicion of involvement, despite insufficient evidence. Three years later, they received death sentences, but were ultimately freed following a global advocacy effort.