(WENY) -- A Tioga County Grand Jury indicted a 12th person in connection to the kidnapping and murder of Thomas Rath and upgraded charges on two other suspects. New York State Police said 37-year-old Joseph M. Howell from Newfield, N.Y. was indicted on charges of first degree murder, second degree kidnapping, and three counts of intimidating a witness.

Howell is among eleven others charged in connection with the disappearance and murder of Rath. Two others who were arrested in connection with the case are facing upgraded charges, after they were indicted by a grand jury.

Colleen Dillon was initially charged with first degree kidnapping and a grand jury indicted her of first and second degree murder.

Jonathan Glennon, who was held in a jail in the state of Maine, initially was charged with second degree murder. Glennon now has additional charges of murder in the first degree and kidnapping in the first degree.

According to police, Rath was abducted from the Ithaca homeless encampment known as 'The Jungle' on May 20th, and his body was found in a shallow grave on state lands in the town of Candor on August 3rd.

Police said they began arresting people on August 16th in connection to the case. Police also said Rath's abduction and murder weren't a random act, and that he knew the people who abducted and killed him.

Police said additional indictments are pending in this case. Authorities have not released a motive behind Rath's kidnapping and murder.

Below is the list of the 12 people involved in the case and what charges they're facing:

Joseph M. Howell, age 37, Newfield, NY

  • Murder in the first Degree,  class "A-I" felony 
  • Murder in the second Degree, class "A-I" felony
  • Kidnapping in the first Degree, class "A-I" felony
  • Intimidating a Witness (3 Counts), class "E" felony

Colleen E. Dillon, age 31, Newfield, NY

  • Murder in the first Degree, class "A-I" felony 
  • Murder in the second Degree, class "A-I" felony
  • Kidnapping in the first Degree, class "A-I" felony

Jonathan Glennon, age 31 of Ithaca, NY 

  • Murder in the first degree, class "A-I" felony
  • Murder in the second degree, class “A-I” felony
  • Kidnapping in the first degree, class "A-I" felony

Angelo Baez, age 48 of Ithaca, NY

  • Murder in the second degree, class “A-I” felony
  • Kidnapping in the first degree, class “A-I” felony

Kysha S. Radcliff, age 39, Lansing, NY

  • Kidnapping in the first Degree, class "A-I" felony

Zayne G. Burlingame, age 30 of Ithaca, NY

  • Kidnapping in the first degree, class “A-I” felony

Mark F. Beatty, age 35 of Ithaca, NY

  • Kidnapping in the first degree, class “A-I” felony

Robert W. Hines, age 52 of Candor, NY

  • Kidnapping in the first degree, class “A-I” felony

Neraida A. Sobrado-Torres, age 43 of Ithaca

  • Kidnapping in the first degree, class “A-I” felony

Jack J. Benjamin Jr., age 39 of Ithaca, NY

  • Kidnapping in the first degree, class “A-I” felony

Brelynn B. Vorrasi, age 27 of Lodi, NY

  • Kidnapping in the first degree, class “A-I” felony

Justin M. Knapp, age 36 of Ithaca, NY

  • Kidnapping in the first degree, class “A-I” felony