The protesters raising slogans against Delhi government also demanded resignation of Rai for the alleged auto permit scam in his department.
"Mere suspension of three officials was just a cover up to save the higher ups involved in the scam. We have been demanding an investigation into the irregularities committed in issuing auto permits by the Anti Corruption Branch (ACB), said Anand Trivedi," convenor of Delhi BJP's transport cell.
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"We also demand a thorough probe into the scam including the role of the Transport minister in it," Trivedi said.
The BJP workers yesterday had staged a protest outside Delhi Chief Minister Arvind Kejriwal's residence, demanding his resignation over the alleged auto permit scam.
Delhi government on Saturday had scrapped more than 900 auto-rickshaw permits in Delhi after alleged irregularities in their allotment.
The government had also suspended three transport department officials over alleged corruption in issuing fresh Letters of Intents (LOIs) for three-wheelers.