The FBI and Massachusetts state police were called to investigate after members of the group organizing the “Straight Pride Parade” in Boston next month reported receiving suspicious packages in the mail.

At least three organizers of the Super Happy Fun America group received envelopes in the mail with no return address. Samson Racioppi told CNN he discovered the envelope in his mailbox around 1:30 p.m. Monday and called the police because of its strange appearance.

“I went out to my mailbox and there was an envelope in there with my name and address, no return address, the back was very heavily taped up and when I shook it I heard stuff shaking around inside,” Racioppi said.

A hazmat team quickly shut down his street to traffic and told neighbors to leave their homes while the mail was investigated. Racioppi then called the other organizers and told them to check their mail.

At least two other organizers, including Super Happy Fun America’s vice president Mark Sahady, said they also received similar envelopes that appeared to be filled with a sand-like substance.

Upon further inspection, the sand-like substance was determined to be… glitter.

The sender or senders of the glitter parcels remains unknown.

(Photo: Pixabay)