A 43-year-old rideshare driver was arrested and charged with kidnapping and multiple counts of sexual assault and kidnapping, prompting authorities to search for possible additional victims.

Felipe Rico-Ceballos of Ontario, California, was taken into custody March 5 in connection with an alleged Feb. 27 assault, according to the Orange County District Attorney’s Office has filed formal charges against Rico-Ceballos.

Police said the investigation is ongoing, and urged people to contact them if they have information or if they think they might be a victim of the suspect.