Two inmates who had been awaiting trial for gang-related killings and several other felony charges escaped from a California jail on Sunday morning, the Monterey County Sheriff’s Office said.

Santos Samuel Fonseca, 21, and Jonathan Salazar, 20, were being held at the Monterey County Adult Detention Facility in Salinas, Calif., when they escaped, according to the authorities.

“Do not approach them, as they are considered dangerous,” the sheriff’s office said in a Facebook post.

The sheriff’s office did not say how the pair had escaped from the lockup, which holds about 800 inmates.