LEWISTON, Maine — Investigators found a note at a home associated with Maine mass shooting suspect Robert Card on Thursday that was addressed to his son, two law enforcement officials told The Associated Press.
The officials described it as a suicide note but said it didn’t provide any specific motive for the shooting.
Card’s cellphone had also been recovered in the home, making a search more complicated because authorities routinely use phones to track suspects, the official said.
A gun was found in the white Subaru that Card abandoned, the officials said. Federal agents were testing the gun to determine if it was used in the shooting and conducting a trace to determine when and where the gun was obtained, the officials said.
Federal agents conducted several searches of properties associated with Card on Thursday, collecting a number of items, including electronics. Investigators are also analyzing Card’s financial information and reviewing his social media posts, writings and his mental health history, the officials said.
The officials were not authorized to publicly discuss details of the investigation and spoke to The Associated Press on condition of anonymity.
Investigators in Maine said Friday they have received more than 500 tips as they prepare to add river divers to the massive search for the suspect.
Investigators are checking those tips off their list as they work, Maine Department of Public Safety Commissioner Michael Sauschuck said at a news conference Friday morning.
People can expect to see investigators at the two shooting scenes — a restaurant and a bowling alley — in coming days as they process “every square inch of these facilities,” he said.
In addition to those sites, he said divers and other investigators will be searching Friday at the Androscoggin River, near where suspect Robert Card's car was found.
“We are on 24 hours, and we will be, until the suspect in this case is brought to justice,” Sauschuck said.
Sauschuck said police were evaluating whether shelter-in-place orders for several communities need to be changed Friday.