Monroe High School put on modified lockdown last week

The Monroe High School was on a partial lockdown for a couple of hours last week after a recently released Monroe prisoner suspected of killing his grandparents disappeared.

Michael Boyson, 26, was released from the Monroe Correctional Facility Friday, March 8. His King county grandparents took him in, held a party to welcome him home, and helped him run errands.

The next day they were found murdered.

Authorities learned during the investigation that Boyson had talked about getting weapons, killing his grandparents and going after authority figures.

Concerned that the man might return to the Monroe area to target prison workers, the Monroe Police Department advised that the neighboring high school be secured.

Monday, during first period, school authorities limited access to the outdoors, and secured the perimeter of the building.

But by second period it became clear that there was no need for further precautions.

“We kept a watchful eye out for the rest of the day, kept a lot of eyes about and let kids go about their business as usual,” said O’Neil. “Then thankfully we heard later that the person had been arrested.”