An interned activist of the Muttahida Qaumi Movement (MQM) died under mysterious circumstances in Karachi Central Jail on Tuesday.

Ameerudin alias Meeru, arrested in January, last year, was booked in a paramilitary soldier’s murder case, among others. Jail officials claimed that the inmate died of a heart attack. However, the MQM’s London group maintained that Ameerudin was poisoned.