A onetime psychiatric technician at a Rockville mental health facility was ordered held without bond Friday amid allegations he raped a sedated patient in her room last year and sexually assaulted a second patient 16 months later, according to Montgomery County District Court records.

“He was in a position of trust and authority who was charged with caring for vulnerable patients,” Montgomery Assistant State’s Attorney Julia Cardozo said in court, “and he exploited that trust.”

Macdoff Oghenejabo Okah, 44, of Silver Spring, began working for Adventist HealthCare Behavioral Health on Broschart Road, in 2016, according to his attorney, John Iweanoge, and to an Adventist spokeswoman.

This June, a patient came forward to allege that a day earlier, Okah had sexually assaulted her in her room, according to police officials. Adventist officials say the woman first reported the accusation to them and that they passed the information on to police.

Okah was quickly fired, according to his attorney, police and an Adventist spokeswoman.

Investigators determined that Okah had come into the woman’s room, fondled her and sexually assaulted her, according to an affidavit they filed in court. Then, on June 20, they spoke with another woman, who said she had been attacked at the facility in February 2018.

The other woman told detectives “she was sedated by hospital staff and her next memory was standing in her room at the facility,” according to court records. The woman said that a man approached her from behind, pulled down her pants and raped her, according to court records.

Detectives showed her an array of photos of different men, and she identified Okah as the man who raped her, according to court records.

Investigators said that the victims do not know each other and were at the facility at different times.

Okah is due in court again Jan. 3. He is charged with one count of second-degree rape, one count of third-degree sex offense and two counts of second-degree assault.

“He asserts his innocence,” Iweanoge said.

The attorney did not address the allegations in court on Friday but argued his client should be given a chance to leave jail on bond. Okah is a U.S. citizen with strong ties to Montgomery County, and is not a flight risk, said Iweanoge, adding this his client has no previous criminal convictions.

District Judge Carlos F. Acosta ordered Okah held without bond, saying that he represented a risk to the community.

In a statement, Adventist said it will continue cooperating with police in the case and that the facility conducted an internal review to strengthen the safety protocols for patients. “We take every allegation seriously. The safety and well-being of our patients is paramount,” Adventist officials said in a statement.

Detectives are trying to determine whether there are other victims, police said.