Principal Accused of Sex Assault, Photographing Boy

School administrators for the South San Antonio Independent School District sent a letter to parents Monday announcing that Alcoser had been put on administrative leave pending the outcome of the police investigation.

Alcoser was arrested Tuesday at a San Antonio hospital where he was being treated for an unknown medical condition. He offered no comment to reporters as he was led by authorities to and from the courtroom. No one answered calls made to his San Antonio home.

Alcoser was released on $75,000 bond, according to Ralph Serrano, manager of the records for the Bexar County Sheriff's Office. He is scheduled to be in court Feb. 26.

A San Antonio Police Department spokesman told ABC News the investigation into Alcoser is ongoing.