A former Hudson firefighter was arraigned Tuesday in Middlesex Superior Court on a charge of child pornography after authorities said they found hundreds of images on his laptop and cellphone.

Raymond Spellman, 44, pleaded not guilty and was released without bail but ordered to have no contact with anyone under age 18 and to continue counseling, the Middlesex district attorney’s office said.

He could not be reached for comment Tuesday night.

Spellman resigned after a search warrant was executed on May 30 at his home on Dean Street in Hudson and the electronic devices were confiscated, prosecutors said. A second warrant was obtained to examine the devices and turned up more than 600 digital files, including videos, the release stated.

Authorities started to investigate Spellman after State Police received a tip in March from the National Center for Missing and Exploited Children about child pornography being downloaded, prosecutors said.

Adam Sennott can be reached at adam.sennott@globe.com