Federal agencies are assisting in search for person of interest in Lewiston shooting
From CNN's Evan Perez 6park.com



Federal agents from the Federal Bureau of Investigation (FBI), Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), Department of Homeland Security (DHS), and others, have joined the search for a person of interest who police say is connected to the shootings in Lewiston, Maine, according to US law enforcement officials.

The FBI has sent dozens of agents and other staff to assist the local and state police leading the investigation. 

These include evidence collection and SWAT teams, victims assistance experts and technical specialists, US law enforcement officials said.

Investigators are looking at cell phone signals to try to identify his movement in the hours and days before the shootings, as well as examining social media and other electronic records to try to identify his whereabouts.