Both will continue to be held in the Clark County Detention Center without bail.
Chief Deputy Public Defender David Westbrook, who is representing Ayala, and attorney Dan Hill, who has been retained by Keys’ family, declined to comment on the cases Tuesday morning.
Ayala, who was 17 at the time of the hit-and-run, is accused of driving a stolen Hyundai Elantra and intentionally striking Probst as he rode his bicycle at about 6 a.m. on Aug. 14.
Keys filmed a disturbing video of the two laughing and planning to hit Probst, according to a Metropolitan Police Department arrest report.
The two are also accused of filming themselves intentionally striking another bicyclist at about 5:30 a.m., and hitting another vehicle minutes before ramming into Probst, the report said.