A judge on Tuesday banned two Grosse Ile lacrosse players, who are accused of slitting the throat and bashing the head of a guinea pig, from having contact with any animals -- except family pets.

Tanner Coolsaet, 18, and Michael Roth, 17, both of Grosse Ile, are each charged with two counts of killing or torturing animals and two counts of conspiring to kill or torture animals.

All charges are felonies punishable by up to four years in prison.

A third 16-year-old on Tuesday was additionally charged for his alleged involvement in the sadistic animal killing, although he's charged in the the county's juvenile court. The 16-year-old is charged with a count each of killing or torture of an animal and animal cruelty.

Coolsaet and Roth are free on $5,000 personal bonds. At a probable cause hearing Tuesday, a judge approved a condition of bond banning out-of-state travel for the teens.

Roth has been granted permission to visit his aunt in Colorado between Aug. 2 and Aug. 8.

"On April 30, 2016, at approximately 11:30 a.m. the Grosse Ile High School varsity lacrosse team met before a game," Wayne County Prosecutor Kym Worthy's Office said in a statement Monday.

"Two team members, Coolsaet and Roth, arrived at the meeting location and produced a box containing a guinea pig.

"Coolsaet had a knife and slit the guinea pig's throat. Roth grabbed the guinea pig and struck it with a small bat."

The guinea pig died a short time later. A motive for the killing hasn't been publicly stated by the prosecutor's office.

After an investigation into the matter began in May, school officials announced they had suspended lacrosse activities of the Grosse Ile High School Red Devils.

"We trust the criminal justice system to determine what, exactly, occurred and whether there is an appropriate consequence which should be assigned criminally to individuals involved," said Grosse Ile Township Schools Superintendent Joanne Lelekatch in a prepared statement following a charging announcement. "We will follow up with our own investigation and determine appropriate consequences for any students enrolled in the District.

"That said, we respect the privacy of our students and will not make any further statements at this time."