Mkhwanazi was found unconscious is in his room last night and by the time he reached the hospital, he was declared dead by the doctors.
"Siyabonga's death comes at a time when Bafana Bafana are struggling to find a striker and losing a striker like Siyabonga is a great loss not only to his family, but to South Africa as a whole," read a statement on the Swallows official website.
"This week has not been kind to South African soccer, we say this because we are also in grief after losing our former star player Jacob Lekgetho and our two loyal fans Vivian Mahlaba and Isaac Siti.
"But we as Swallows say let us all find solace in God and find strength in his power. We would like to say to all these families that our prayers are with you all during this trying time of your lives," concluded the statement.