MILLBURY, Mass. – A cinder-block swastika laid out on a high school track discovered by early morning walkers Monday sparked a police investigation that could lead to criminal charges.

Kimberly Wright-Elder and others who walk on the track at Millbury Memorial Jr./Sr. High School discovered a swastika made of cinder blocks just before 5:30 a.m. Monday and called police, the Telegram reports.

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Wright-Elder and a friend told the site they took pictures of the symbol and posted it to a local Facebook page and then disassembled the swastika when police did not arrive for over an hour.

“I took to social media this morning because I called and thought an officer should come see it and then wanted to see it removed before my son got to the school for football,” Wright-Elder wrote to the Telegram in an email.

“We were there for an hour doing our walk and no one ever came.”

Millbury Police St. Donald Desorcy told the site investigators were working “almost immediately” to secure surveillance video footage of the area.

That footage revealed a group of three or four teens placing the 16 cinder blocks into a swastika. The teens then allegedly took pictures of the image with their phone, MassLive.com reports.

Desorcy told the site the teens did not damage any property, but could face criminal charges that “fit the crime” for “causing alarm.”

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“It looks like a prank,” he said. “Ignorance or lack of common sense could be the justification for this, not that what they did can be justified.”

Selectman Bill Borowski offered $100 of his own money on Facebook as a reward for information leading to an arrest of the culprits and later confirmed the reward to the Telegram.

“This heinous type of vandalism has no place in Millbury, nor anywhere,” Borowski wrote in an email to the news site. “This incident cannot and should not be characterized as the possible actions of an ill-informed youth. The swastika is a symbol of pure evil and we must expose it and its supporters for what it/they really are.”

Desorcy initially told the Telegram those who constructed the swastika could face potential misdemeanor or felony charges, depending on the results of the police investigation.

Many folks who read about the incident online believe it’s overblown.

“Desorcy said criminal charges could be brought for ‘causing alarm,’” QuantoQueeto posted to MassLive. “On no, what’s that, a $25 fine? Grow up. What a waste of time.”

“OMG call the FBI! … yawn,” ellyvator wrote. “Grow up already you overly sensitive children.”

Others questioned whether the incident was a crime at all.

“OMG someone placed cinder block in the shape of a swastika. A stupid prank by bored kids probably,” SoxFan9877 posted. “At least they did not do anything which actually caused damage such as using spray paint etc.”

“Hmmm, could this be considered covered under free speech?” krymore questioned. “If someone was burning an American flag would they be charged with causing alarm?”