Bombshell allegations in the Patrick Kane rape case ... with the accuser's lawyer claiming someone stole the rape kit evidence bag and dropped it off at her mother's doorstep.
The accuser's attorney, Thomas J. Eoannou, held up the bag during a news conference -- verified its authenticity -- and said, "The rape kit evidence bag has been tampered with."
Eoannou says the bag was delivered anonymously -- and he's demanding law enforcement immediately open an investigation into how the bag was removed from police custody in the first place.
Eoannou added, "In my 30 years plus of being both a prosecutor and a defense attorney, I have never seen an evidence bag outside a of police lab, a prosecutor's office, or a courtroom, let alone find one in the door way of a rape victim's mother's home."
"This evidence bag has been ripped open. The purpose of an evidence bag is to protect the items of evidence from tampering. The bag itself is even critical evidence to the chain of custody."
26-year-old Kane -- one of the biggest stars in the NHL -- has been accused of raping a 21-year-old woman back in August. So far, no charges have been filed.