SPRINGFIELD, Mass. (WWLP) - Two Springfield teenagers were arrested during a police investigation over several weeks of a suspect with an illegal firearm. The Springfield Police Department said that the Firearms Investigation Unit (FIU) received information that a 13-year-old boy who had an active arrest warrant had an illegal firearm on Thursday afternoon. Detectives began surveillance in the area of Lombard Street and saw the suspect with two other people on the 600 block of Main Street. AR-15 found inside car after shots fired in Springfield As detectives watched, they observed a boy, later identified as a 14-year-old, allegedly pulled a firearm out of his jacket pocket. The three then walked into a parking lot on the 600 block of Main Street when detectives attempted to stop them. The 13-year-old suspect ran from police and allegedly threw a gun over a fence before he stopped. Police recovered the firearm on Niagara Street and arrested the suspect. The 14-year-old boy who was seen with a gun, also ran away and was arrested on Dwight Street Extension. Police found the firearm on Adams Street. The Springfield Police Department did not publically release the names, mugshots, or charges due to their age. Local News Headlines Hawk found trapped under solar panel rescued in Springfield Portion of Mass. Pike closed for repairs on Woronoco Bridge in Montgomery and Russell Chicopee teenager arrested after heroin and cocaine found during narcotics investigation January weather outlook in Massachusetts, NOAA WWLP-22News, an NBC affiliate, began broadcasting in March 1953 to provide local news, network, syndicated, and local programming to western Massachusetts. Watch the 22News Digital Edition weekdays at 4 p.m. on WWLP.com.