RIVERSIDE — A 13-year-old boy was booked into a Riverside County juvenile detention center after being suspected of making criminal threats on social media, police announced Tuesday. A “school threat assessment and response” investigation was begun late Monday evening after Central Middle School parents reported an Instagram post depicting a student with a possible firearm and a list of classmates’ names, according to the Riverside Police Department. Investigators conducted a search at the boy’s residence, where a toy gun was recovered. He was taken into custody and booked on suspicion of making criminal threats and conspiracy. Police said another student was expected to be booked on suspicion of conspiracy. Anyone with information regarding the threats was urged to contact School Resource Officer Ben Rodriguez at BRodriguezRiversideCA.gov or 951-826- 5638. Anyone seeing a post on social media suggesting potential school violence in Riverside is advised to call the Public Safety Communications Center non- emergency line at 951-354-2007. The arrest announced Tuesday was at least the sixth in a series of school threat arrests in Riverside County this month. Related Articles Crime and Public Safety | Riverside high school student arrested on suspicion of making criminal threat Crime and Public Safety | Moreno Valley boy arrested in Jurupa Valley investigation, is suspected of threatening students Crime and Public Safety | Riverside student suspected of posting threats against classmates arrested Crime and Public Safety | 14-year-old arrested after threats made at Jurupa Valley school Crime and Public Safety | 15-year-old boy arrested on suspicion of making threats against Arlington High School in Riverside