A Rwandan academic and government critic died in custody as he was set to be freed from jail, immediately raising concern from a prominent rights group that urged an investigation into the death of Aimable Karasira. Karasira died on Wednesday after he took an overdose of his own medication, according to Rwandan authorities. Human Rights Watch questioned that account, urged the international community to pay attention, and called for a “body of experts” to conduct an independent probe. “There are many reasons to question the circumstances surrounding Aimable Karasira’s death in custody, not least the years of harassment and persecution he experienced at the hands of the authorities,” the group's Clémentine de Montjoye said in a statement. “The government bears the burden of proving that Karasira was not unlawfully killed." Karasira died at the Nyarugenge District Hospital in Kigali , the Rwandan capital.…