A man was arrested Monday on suspicion of raping a woman described as being “severely disabled” who was under his care in Anaheim, police said.

A cellphone that belonged to suspect Raul Salgadocastro was found and contained a video of the suspected assault. The evidence was turned over to the Police Department and an investigation began, Sgt. Shane Carringer told KTLA.

It is unclear exactly when the assault took place, but the sergeant said it was “within the past several weeks.”

The 45-year-old victim, who is non-communicative, lives in an Anaheim facility and had been under Salgadocastro’s care for nearly 20 years, police said.

Authorities believe the assault occurred at the facility.

Carringer did not disclose the location of the facility, nor did he provide further details about the victim in order to protect her identity.

“She essentially has the functioning abilities of about a 1-year-old child,” he said.

Salgadocastro, 40, of Anaheim, works as a caretaker for at least three facilities in Orange County in recent years, and officials asked anyone with information about his activities to call Detective J. Carney at 714-765-1697.

His bail was set at $1 million.