According to a criminal complaint filed in February for the firearms charge against Cosmo DiNardo, he "is known to be suffering from mental illness" and had previously been involuntarily admitted to an inpatient treatment facility. He had a shotgun and ammunition with him, weapons he was prohibited from having because of his admittance to the care center, according to the court document. The charge against him was dismissed in late May. The court file included a June 21 letter from from the District Attorney's Office to the Bensalem Police Department, authorizing police to reinstate the charges.