Simmers said the DA had a zero-tolerance approach to corruption and was deeply concerned about the allegations against Mnqasela.
“Apart from escalating the matter to the Hawks, the DA has also reported the matter to its federal legal commission for urgent investigation,” he said.
“The party will follow its internal disciplinary processes with deliberate speed to ensure accountability, while respecting Mr Mnqasela’s right to submit his defence in this matter.”
Mnqasela is the latest senior DA politician in the Western Cape to face allegations of wrongdoing.
In February, Albert Fritz, the party's provincial leader and community safety MEC, lost both jobs after an independent investigation into allegations of sexual misconduct, alcohol abuse and grooming.
On April 2021, his predecessor as provincial leader, Bonginkosi Madikizela, resigned from the DA after claiming to have a degree he did not possess in his biography on the provincial government website.
Mnqasela was acquitted on a rape charge in 2011, when he was a DA MP for Khayelitsha. In November 2020 he contested for the provincial leadership but was defeated by Madikizela.