Ontario Mills stabbing case suspended after judge doubts defendant's mental competence

RANCHO CUCAMONGA -- Criminal proceedings were suspended this week against an Ontario man accused of stabbing an 8-year-old girl and her father after a judge said he had doubts about the defendant's mental competence.

Gregory Robert Stefan, 28, was ordered during a Tuesday court appearance to undergo medical treatment following the ruling by Judge Michael Libutti.

Stefan faces two counts of attempted murder for allegedly stabbing a girl and her father in May at the Dave and Buster's restaurant at the Ontario Mills mall.

His motive for the alleged attack is unclear. Stefan and his two alleged victims did not know each other, and did not interact prior to the incident.

Stefan is accused of stabbing the girl at the table where her family was eating, then attacking the girl's father when he came to her aid.

Stefan made cryptic and unintelligible remarks during the incident and immediately afterward, and was unresponsive when Ontario police attempted to interview him after his arrest, according to police reports attached to Stefan's court file.

Stefan is scheduled to next appear in West Valley Superior Court on Nov. 3 for a hearing related to his mental-health treatment.

He remained jailed Wednesday in lieu of $2.2 million bail.