It is believed Monica is with 23-year-old Alberto Silva Sanchez; however, authorities do not know their whereabouts.
Sanchez, who is from Big Bear City, is believed to be driving a 1997 black Ford F150 single cab truck with Kansas license plates.
The teenager was last seen on July 23 around 4:00 p.m. when she left home for work at the Taco Bell in Big Bear Lake.
Anyone with knowledge of the couple’s whereabouts is asked to contact the police at 1800-78-CRIME.
Flesh-n-bone, whose real name is Stanley Howse, is best known as one of the five members of top-selling rap group, Bone Thugs-n-Harmony. He was the first member of the group to release a solo album entitled T.H.U.G.S. (Trues Humbly United Gatherin’ Souls) on November 19, 1996, on Mo Thugs Records and Def Jam Recordings.