Uber’s ride-sharing network failed to suspend and investigate its California drivers though the passengers reported they were driving drunk, thus the state regulators charged in an enforcement action, resulting in $1.13 million fines.

The consumer protection arm found Uber Technologies Inc to have been violated the rules of ‘zero-tolerance’ that governs the complaints of drunken driving on 151 occasions over this year, out of the reviewed 154 complaints.

Only in 21 of those cases, the company did follow-up driver investigation, was found by the commission on inquiry.

The fine for alleged violations is to mark the foremost citation issued against the ride-hailing San Francisco-based network since the rules in 2013.

The enforcement action follows owing to a recent consumer repercussion against the company and its senior management about the revelations regarding its business tactics and corporate culture, including sexual harassment complaints.

The findings of drunken-driving that stem from a passenger complaints review that was lodged between August 2014 and August 2015, were a nine-page investigative order raised on Tuesday by the commission’s Consumer Protection and Enforcement Division.

Those charges and the penalty proposed are now subjected to examination by an administrative law judge who will perform further proceedings before recommending the action, if any, should be taken against the company.

Eva Behrend, Uber spokeswoman, noting the report relates to complaints of the past years, said, “We’ve improved our processes significantly since then.” She also read Ubers community guidelines that stated “We have zero tolerance for any impaired driving,” which stated that any driver found under the influence of drugs or alcohol on the job will be “permanently deactivated” from the network.