FORT LAUDERDALE, Fla. (AP) — An Ultimate Fighting Championship mixed martial arts fighter is accused of stabbing his two sisters early Thursday as they slept in a spare bedroom in his apartment because a “higher power" told him to do so, police in Florida said.

Irwin Rivera, 31, who is known as “The Beast,” remained in the Palm Beach County Jail early Friday on two counts of premeditated attempted murder, according to jail records.

An arrest report said multiple neighbors and one of the victims called 911 to report the stabbing at Rivera's Boynton Beach home early Thursday morning.

Arriving officers found a 22-year-old woman next to the road, covered in blood, an arrest report said. She had multiple stab wounds on her back, head and arm, and told officers her brother stabbed her. She told officers her sister was still in the house, the report said. The 33-year-old woman was found inside, also with multiple stab wounds.

She had two collapsed lungs and was taken to Delray Medical Center, the report said. The sisters' identity was not released. The Boynton Beach Police department said one victim is in stable condition, the other is in critical condition.

The women came to visit their brother at his home and spent the night in his spare bedroom, they told investigators. They woke up to Rivera repeatedly stabbing them with a knife, the arrest report said.

The woman told police she tried to fight him off, but he kept stabbing her. The younger sister ran from the room, the report said. The woman told police she was finally able to push him away and call police.

Neighbors told officers they woke up to a loud banging sound at their front door They found a woman covered in blood and begging for help, the report said.

“He’s trying to kill me! Please help my sister,” the arrest report said the woman told neighbors. As the door was opened, the neighbors saw Rivera walking by, also covered in blood, the report said.

“Shut the door,” Rivera shouted at the neighbors, according to the report. He then shouted, “everything is okay."

He took off running when he saw the neighbors were on the phone, the report said.

Delray Beach Police found Rivera about 7 a.m., the report said. He spontaneously uttered “I killed my sisters,” according to the report.

He was taken to the Boynton Beach Police Department, where he gave police a statement, and admitted to stabbing his sisters, the report said. He told investigators he used a brass knuckle knife to stab his sisters because a “higher power" told him it was “his purpose," the report said.

UFC officials released a statement to MMA Weekly, a digital publication that covers the profession.

“UFC is aware of the recent incident involving Irwin Rivera and subsequently received information from his management that he has been exhibiting behavior consistent with mental health issues,” the statement said. The statement said Rivera's career is on hold pending an investigation.

A lawyer for Rivera was not listed on jail records.