PORTLAND -- A grand jury indicted the teen accused of killing missing 14-year-old Yashanee Vaughn on murder and manslaughter charges.

The charges against 16-year-old Parrish Bennette, Jr. were announced Friday morning. He was ordered to be held on no bail in a packed courtroom Friday.

Bennette faces one count of murder with a firearm and one count of manslaughter with a firearm. The state further alleged that while committing the crime, Bennette threatened Vaughn with the firearm.

The Multnomah County Grand Jury finished hearing testimony Thursday, after 11 witnesses had been examined.

Investigators said they believe Vaughn was killed by her boyfriend, Bennette, last month. He had been held in jail on manslaughter charges after a juvenile judge reduced the charge.

Background: Police believe Parrish killed Vaughn

Vaughn's body has not been found. Bennette was initially charged with one count of murder in the case.

Crews searched for Vaughn on Rocky Butte April 1 to April 5, but did not find her. Crews again searched Rocky Butte Friday afternoon, but did not release any details about what spurred the search effort.

Detectives think he killed her on March 19. She was reported missing by her family on March 21. She was last seen at a bus stop on Northeast 82nd Avenue.

Vaughn's family recently began circulating a flier about the girl's disappearance, hoping it may lead to new clues for police.

The search for Vaughn was featured on CNNFriday afternoon.

More: Vaughn's family hopes fliers bring tips

Crime Stoppers has offered a $1,000 reward in the case.

Sources: Dad told police teen may have harmed missing girl

Photos: Yashanee Vaughn murder investigation

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