Attorney General Andrew Cuomo could possibly drop all murder charges against Martin Tankleff at a Monday news conference.

Cuomo had appointed a special investigator to determine if Tankleff should be retried for the 1988 murder of his parents and whether Suffolk County prosecutors and detectives mishandled the case.

The announcement is expected around 2 p.m.

Tankleff was originally convicted in 1990 for the double-murder and sentenced to 50-years-to-life. He served 17 years of that sentence before an appeals court overturned the conviction in December. Suffolk District Attorney Thomas Spota announced he would drop the murder charges days later.

The case was reopened in May with Suffolk County Judge James Hudson providing over a grand jury considering evidence. Hudson's history with the Suffolk County District Attorney's Office was seen as a risk, and the judge agreed to recuse himself.

Tankleff, who was 17 years old at the time of his parents' death, has maintained his innocence for years despite an early confession to the crime. He confessed after a detective lied to him, telling the teenager his father came out of a coma and implicated him.