The 17-year-old was placed under arrest.
Vance, known as Kitty to friends and family, has been missing six days.
Police Tuesday were searching for a suspect who fatally stabbed a teenager at his South Los Angeles home.
A teenager was killed Monday night while attempting to cross the 91 Freeway in Riverside.
A pregnant teenager was in stable condition Monday after she was shot multiple times at a park in the Pico-Union district.
Neither of the teachers named in the alleged threat was injured.
Ventura Police Detectives believe there may be additional victims.
A 17-year-old boy was arrested Monday for making a false bomb threat against a Chino school, police said.
Jin Wuwei was last seen Friday near the Claremont Lodge in Claremont around 12:42 p.m.
A 13-year-old girl was wounded Tuesday by a stray bullet while waiting at a bus stop.
Jason Guillen, 19, has the mental capacity of a 3-year-old, his family says.
A second arrest was announced Wednesday in the stabbing death of a 14-year-old high school student in East Los Angeles.
Not only does Andrew Franco not think of himself as a hero — saving people, for him, is becoming rather routine.
There is no time to replace the stolen CD or find a duplicate to arrive by Christmas.
Authorities said they detained a third man but released him pending further investigation.