BAMAKO, Mali—A man detained for attempting to stab Mali’s transitional president last week has died in a hospital while in custody, the government said. The attempted stabbing of Col. Assimi Goita was on July 20 at a public ceremony at the Great Mosque in the capital, Bamako, to celebrate the Muslim holiday of sacrifice, Eid al-Adha. Goita, a special forces colonel who staged two coups within nine months and is now Mali’s transitional leader, was unharmed in the attack. Suspects were detained and an investigation into the attack was opened. “The perpetrator was immediately apprehended by the security services. During the investigations … his state of health deteriorated,” according to a government statement issued Sunday. The suspect was admitted to the hospital where he died, the government said, adding that an investigation into the cause of his death will be carried out. After the two coups, Mali is currently in …