UPDATE, 9:50 A.M.: State Police Maj. Chris Aucoin said the search for the reported gunman on Interstate 93 has been called off. No gunman was found. No further information is available at this time.
UPDATE, 9:02 A.M.: The Eagle-Tribune's John Toole just tweeted that the search has now expanded south toward Windham.
UPDATE, 8:55 A.M.: Police are now notifying area businesses of their search, and an area Montessori school just called police and said it wants to put the school in lockdown until the situation is resolved.
State police are using aircraft to search for the gunman. The search has also extended beyond I-93 to the Route 102 area as well according to reports.
An earlier story follows:
Police are searching Interstate 93 in the area of Exit 4 in Londonderry after receiving several reports of a man in the median with a gun.
"We did get a couple reports about a man with a gun on 93," New Hampshire State Police Maj. Chris Aucoin said. "We're checking the area – we have not found anything."
Aucoin said state police have "plenty of resources" in the area, and Derry and Londonderry police are assisting with the search.
Londonderry Patch will have more on this story as it develops.