A grade school teacher in Massachusetts allegedly ran naked through the school and out into the neighborhood.

Authorities say it happened Tuesday at Rice Elementary School in Worcester.

Witnesses say the teacher was acting erratically before taking off his clothes… And when he did the principal put the school on lockdown.

A parent says he chased the teacher down the street. He was finally caught a couple blocks from the school.

“He tried to pull open door handles, banging on windows, trying to get in and screaming outrageous things,” witness Franco Girardi said.

Officials are checking if the teacher had any physical contact with students.

Police say the episode is a mental health related issue, and the teacher will not be facing any charges.WHAT OTHERS ARE CLICKING ON RIGHT NOW: