Sheriff's officials on Tuesday had asked for the public's help in
He surrendered around 10:30 a.m. today at the Martinez
Detention Facility and is being held there in lieu of $2 million bail.
The announcement of Navarro's alleged involvement in the crime
comes after U.S. marshals arrested another suspect in the case, identified as
Michael McQueen, 28, in Sonoma on April 16, sheriff's spokesman Jimmy Lee
McQueen is also being held at the Martinez Detention Facility
under $2 million bail.
Authorities are still investigating the killing of Callen.
with information about the case is urged to contact the sheriff's office at
(925) 313-2600. Anonymous tips can also be left at (866) 846-3592.