© Jared Wickerham/Getty ImagesState Police spokesman Lt. J. Paul Vance speaks about the mass shooting at Sandy Hook Elementary School in Newtown, Conn., Saturday. He delivered another update Sunday morning.
Following the killing spree at Sandy Hook Elementary School some social media users took to Twitter to spread false information about the shootings.

Connecticut officials cautioned against the spread of false information on social media sites in the wake of Friday's massacre.

Anyone who posts fake material about the rampage at Sandy Hook Elementary School or killer Adam Lanza could face arrest, Connecticut State Police spokesman Lt. J. Paul Vance said at a press conference Sunday.

"There has been misinformation coming from people posing as the shooter in this case, using other IDs, mimicking this crime and crime scene," Vance said, adding that some of the posts are of a "threatening manner."

"It's important to note that we have discussed this with federal authorities. These things are crimes. They will be investigated and prosecuted."

© Allison Joyce/New York Daily NewsOfficers eventually cleared the threat Sunday.
Vance said people have also been posting from fake accounts purporting to be the Newtown city police or the Connecticut state police.

Neither organization has been using social media to provide updates about the deadly shooting.

"All information relative to this case is coming from these microphones," he said.

Officials are currently working to identify and question those responsible for the spread of misinformation, Vance added.

Authorities have not yet revealed a motive behind Lanza's Friday morning killing spree. The 20-year-old fatally shot 26 people, including 20 children ages 6 and 7, before turning a gun on himself.

Initial reports of the massacre were marked by confusing and, at times, contradictory information.

The gunman was initially identified as Ryan Lanza after police discovered an ID bearing that name on the shooter's body, according to WNBC. It was later revealed that Ryan Lanza was the shooter's older brother.