Lee Fitzgerald was last seen on January 9.
Dean Thomas has been sentenced to 16 years imprisonment.
Paul Redhead of Oakfields has been jailed for three years.
More than £560 were raised within 24 hours.
A man in his 20s, who was arrested in connection with the incident, has been released on bail.
So far, 20 vehicles have been damaged.
Some of these have been eaten by four dogs.
A man in his 20s has been arrested in connection with the incident.
The incident happened on November 19 in Dickleburgh.
The Diocese of St Edmundsbury and Ipswich and a former High Sheriff of Suffolk have paid their respects.
Aaron Hurley, 25, was sentenced at Norwich Crown Court last week.