At least 12 people were killed and 9 injured on Tuesday when gunmen opened fire in an informal settlement east of Johannesburg, police say. ⁣ ⁣ The motive for the attack is not known, but Gauteng Police Commissioner Tommy Mthombeni has said that it may be related to illegal mining.⁣ ⁣ In a statement, South African police said they have launched a manhunt for more than 10 suspects following the attack.⁣ ⁣ #southafrica #johannesburg #shooting #police #mining