ORLANDO, Fla. -

A 41-year-old Orange County school bus driver appeared in front of a judge Friday after he was arrested on suspicion of sending sexual text messages to a 13-year-old boy, and authorities say they're concerned there may be other victims.

William Matthew Greene, of Orlando, was arrested on one count of lewd conduct. His bond was set at $7,650.

According to the Orange County Sheriff's Office, the sister of the Walker Middle School student discovered dozens of text messages on the boy's cellphone and contacted authorities.

"You have an individual who was trusted, an individual who has the authority to get our children to and from school in a safe environment, safe location, drop them off and pick them up and he's using that knowledge and we're not going to tolerate that," said Orange County Sheriff Captain Angelo Nieves.

Many of the text messages were graphic, but according to an arrest report, Greene told the the teen, "I prefer the companionship of young males." The teen also told deputies Greene asked if "he was still a virgin."
The text messages were first sent May 10 and were received until June 6.
Orange County sheriffs detectives then took over the conversation and began texting Greene from the boy's phone.  At one point, Greene texted, "I could lose my job and so much more...I really felt drawn to you since meeting you.  I want to know you."

"Unbeknownst to him, at that point, he opened up and further inflamed the sexual contact which is highly inappropriate," said Nieves.
According to the arrest report, detectives then arranged a meeting with Greene and arrested him.
Greene admitted he texted the teen and even told deputies that he had driven by the boy's home.

The arrest report said Greene asked several other students for their phone numbers and appeared to know where some of the students he drove home lived. Deputies interviewed two Walker Middle School students who described Green as "weird" and said they had spotted the bus driver in a car outside of their homes while he was off-duty.

Green has been a bus driver with Orange County for seven months and drove students at Walker Middle School for about three weeks in January. Most recently, records show Green drove students to and from Kaley Elementary and Blankner, which is grades kindergarten through eighth.

The school district said if the the investigation is still ongoing when school resumes, Green will be placed on relief of duty. The school district tells Local 6 during Greene's tenure, he bussed 119 students.
At this point, the Orange County School district is not sending parents letters, but say they are cooperating with law enforcement and have not been asked to send out an alert.

Investigators are asking anyone aware of other inappropriate actions by Green to contact the Orange County Sheriff's Office.

Watch Local 6 News for more on this story.