The officer sustained critical injuries and was airlifted to the Nelspruit Medi-Clinic.
"He later succumbed to the injuries. The driver of the speeding vehicle also sustained minor injuries during the accident and he was taken to Medic Clinic for medical examination‚" said Mmusi.
Ngomane had recently received an award from Safety MEC‚ Pat Ngomane for his performance during the festive season.
He was one of at least three officers who were killed on the job this week.
In Gauteng‚ two JMPD officers were mowed down‚ allegedly by a drunk motorist‚ on Monday night near Sandton.
Winnie Mokgolo‚ 35‚ and Sophie Ngoasheng‚ 45‚ were fatally injured when the motorist lost control and rammed his car into a roadblock mounted by the JMPD along Witkoppen Road near Montecasino.