SPRINGFIELD — An East Longmeadow man was arrested Wednesday and charged with transporting explosives in connection with allegedly trying to torch a Jewish nursing home earlier this month, according to newly unsealed court records.

John Michael Rathbun, of Lori Lane, was arrested after federal agents raided his home this morning.

While Rathbun has not been charged with a hate crime and an investigation remains ongoing, investigators said they found his blood on a charred Christian church pamphlet stuffed in a yellow gas container and left at Ruth’s House, an assisted living facility on Converse Street in Longmeadow. The facility is “guided by Jewish value, but serves all faiths,” according to its website.

Longmeadow police discovered a “homemade incendiary device” in the entryway of Ruth’s House at 10 a.m. on April 2, according to an FBI affidavit.

In connection with its investigation, FBI agents discovered anonymous postings on various social media platforms promoting white supremacy and a disdain for “that Jew nursing home in Longmeadow,” the document says. The user also deemed April 3 “jew killing day” and applauded the Holocaust, the records show.

“User 2’s entry for ‘jew killing day’ was a call to action that sought to incite users to target Ruth’s House with violence on or about April 3, 2020,” the FBI affidavit reads.

“The incendiary device consisted of a five-gallon plastic Scepter gas canister ... filled with liquid believed to be flammable gasoline, with burnt paper (later identified as a Christian religious pamphlet) placed in the nozzle of the canister. A portion of the pamphlet was charred and appeared to have been lit on fire in an attempt to ignite the gas,” it continues.

Rathbun initially denied any connection to the incident, but could not explain how his blood got on the pamphlet jammed in the gas container, agents said.

No date has yet been set for his arraignment. It is unclear whether Rathbun has an attorney.

This story will be updated with additional information.