ABC News February 20, 2020

Fotis Dulos' friend pleads not guilty to conspiracy to commit murder

WATCH: Fotis Dulos' friend pleads not guilty to conspiracy to commit murder

A friend of Fotis Dulos pleaded not guilty Thursday to conspiracy to commit murder charges in connection to the disappearance of Dulos' wife, Jennifer Dulos.

MORE: Fotis Dulos' girlfriend returns to court for 1st time since his suicide, pleads not guilty

Jennifer Dulos went missing in May 2019 amid a custody dispute with her estranged husband.

New Canaan Police Department
Jennifer Dulos in an undated photo.

Fotis Dulos died by apparent suicide in January, weeks after he was charged with Jennifer Dulos' murder.

Kassi Jackson/Hartford Courant/Tribune News Service via Getty Images
Fotis Dulos is escorted out of the Troop G State Police station before being placed in a cruiser, Jan. 7, 2020.

Kent Mawhinney, a friend of Fotis Dulos and an attorney himself, was charged with conspiracy to commit murder in January.

South Windsor Police Dept.
Kent Mawhinney in a police booking photo.

Fotis Dulos' girlfriend told police Fotis Dulos was meeting with Mawhinney at the time Jennifer Dulos disappeared, and according to an arrest warrant, Mawhinney gave conflicting statements to police about his contact with Fotis Dulos.

MORE: A Connecticut mystery: A timeline of the Jennifer Dulos, Fotis Dulos case

Mawhinney wore a tan jumpsuit and shackles to his brief court hearing Thursday. His attorney did not comment after the appearance.

Kent Mawhinney plead not guilty to conspiracy to commit murder charges in connection to the disappearance of Jennifer Dulos in Superior Court in Hartford, Conn., Feb. 20, 2020.

Mawhinney is set to return to court on March 31.

MORE: Inside the Fotis Dulos, Jennifer Dulos murder case: Possible grave and nanny's account

Fotis Dulos' girlfriend, Michelle Troconis, is also charged with conspiracy to commit murder and has pleaded not guilty. She is next due in court on March 4.

Jennifer Dulos' body has never been found.