TOLEDO, Ohio (AP) - Two of four teenage boys arrested after a sandbag tossed from an Ohio interstate overpass killed a Michigan man have pleaded guilty to charges including involuntary manslaughter.

  

A prosecutor in Toledo said Friday the 14- and 15-year-old boys didn't toss the sandbag that killed 22-year-old Marquise Byrd, of Warren, Michigan. She says one of the boys threw another sandbag from the overpass the night of Dec. 19.

  

Byrd died a few days after a sandbag smashed through the windshield of a car he was riding in on Interstate 75 in Toledo.

  

Two other boys remain charged in Byrd's death.

  

The teenagers who pleaded guilty told a juvenile court judge they first started out throwing rocks before dropping sandbags off the overpass. They will be sentenced next month.