On Tuesday, the Associated Press published an article detailing how the FBI can use a smartphone as a tracking device for the search of an iPhone belonging to one of the Boston Marathon bombers.
The AP says that the FBI has installed a GPS tracking device on the phone in order to determine the location of the suspects, as well as their associates.
The FBI reportedly used a remote device to monitor the suspects for three days before the attack on Sunday.
The FBI has said that the device was used to track the suspects’ movements after the bombing.
The tracking device has not been disclosed publicly, but according to the AP, it was likely installed as part of an investigation into the suspects.
The AP article also stated that the phone is likely owned by someone in the United States who was at the marathon when the bombing occurred.
In the wake of the bombings, the FBI and other law enforcement agencies have been using GPS tracking devices to track people they believe may be connected to the bombing suspects.