A public petition demanding arrests in the killing of a 22-year-old Malawian man has been quietly altered to remove the names of several alleged suspects, fuelling concerns among campaigners and relatives about transparency in the investigation. The petition, which had gathered more than 2 800 signatures, originally listed six men witnesses said had been present during the incident that led to Abdul Aziz Tofik Panjwani’s death. The names of fiv…