MINNEAPOLIS (WCCO) — The lawyer for a convicted murderer was back in court Thursday to fight for his client.

Jeffery Trevino was convicted in October of 2013 of killing his wife, Kira Steger, and dumping her body in the Mississippi River.

READ MORE: 84-Year-OId Man Found Pinned To Death Under Minivan In Kandiyohi, Sheriff Says

Trevino’s attorney was in front of a three-judge panel at the Minnesota Court of Appeals to ask for a reduction in Trevino’s 27-year sentence, as well as a reversal of the conviction and a new trial.

READ MORE: Fargo Woman Killed In Head-On Crash Near Evansville

His lawyer claims the jury did not get accurate instructions in the case.

MORE NEWS: Why Are Federal Tax Refunds Delayed? And What Can You Do About It?

The court now has 90 days to issue a ruling.