Two California inmates escaped Wednesday night after cutting through the bars of a second-story window and rappelling down the side of the Santa Clara County Main Jail, according to the Santa Clara County Sheriff's office.
The two inmates, Rogelio Chavez and Lanon Campbell, created a makeshift rope using bedding and clothing to lower themselves from the window.
Two other inmates also escaped the facility but were quickly captured outside the jail, Sgt. Rich Glennon said Thursday.
Detectives are still working to determine how the men were able to cut through the bars on the jail's windows.
A deputy patrolling outside the jail reportedly saw the inmates as they were attempting to escape.
"He kind of thought he saw some movement in the shadows looked up and saw some bedding in the window," Glennon told The Associated Press.
Chavez and Campbell were both facing false imprisonment and weapons charges.
Now authorities are conducting ground searches and a helicopter using thermal imaging is searching from the skies.
The inmates were last seen wearing orange tops and gray bottoms.
The two other inmates who were quickly recaptured are expected to face charges.
Glennon said anyone who sees these men should call police but he warned the community not to approach them.
The Associated Press contributed to this report.