Two suspects accused of a triple murder at a Farmville convenience store had their trial dates set during a court appearance Tuesday.

Antwan Andre Anthony and Willie Odell Whitehead Jr. --each charged with three counts of first-degree murder-- both pleaded not guilty to all counts Tuesday morning.

They, along with two other suspects, are accused of shooting and killing three employees at the Hustle Mart in Farmville on April 1, 2012.

Anthony's trial date is set for Feb. 16, 2015 and is expected to last for 8 to 10 weeks, said District Attorney Kimberly Robb. Whitehead's trial is scheduled to begin on April 20, 2015.

Killed in the Hustle Mart shooting were Gaber Alawi, 24, Nabil Nasser Saeed Al'mogannahi, 26, and Mokbel "Sam" Mohamed Almujanahi, 16, investigators said. Sam was a student at Farmville Central High School.

Deputies said the shooting was part of a robbery.

Investigators said two other suspects are also involved-- Xavier Shamble and Raekwon Terrell Blount, who was 14 years old at the time of his arrest. They are each charged with three counts of first-degree murder as well. A tentative trial date for Shamble has been set for June 2, Robb said.

In addition to the Hustle Mart shooting, Whitehead is accused of plotting to murder Pitt County Sheriff Neil Elks and his wife, as well as planning to kidnap the DA's daughter, said investigators. Whitehead allegedly revealed his plans to other inmates, deputies said.

Furthermore, Whitehead and Anthony are accused of killing an Edgecombe County couple at their Princeville home in March 2012, said police.