Police said that there have been three incidents within the past day of students falling ill from the synthetic drug that can cause hallucinations, delusions and suicidal thoughts.
Police are investigating incidents at Starkweather High School in Plymouth.
A student has been taken into custody in connection with threatening letters found this week at Plymouth-Canton Schools.
The search continues for the person or people responsible for leaving threatening notes on the Plymouth-Canton School campus this week.
A reward is now being offered to help catch the person leaving threatening notes around the Plymouth-Canton-Salem high school campus.
The “all clear” has been given at the Plymouth-Canton Educational Park, following a second police investigation this week that had the three high schools on lockdown.
Classes at all three Plymouth-Canton high schools are back in session Tuesday morning after a threatening note sent everyone home Monday.
Plymouth Canton students have been sent home early following a threat that led to a lock-down Monday morning.
Raymond Schepansky has pleaded guilty to carrying a concealed weapon.
As Gov. Snyder and state Republicans celebrate the budget deal, some Michigan lawmakers and educators remain concerned about what cuts to education will mean for students.