Public access to the Kennebec Arsenal in Augusta has been restricted following concerns that illegal activity is taking place on the property.

Signs at the Kennebec Arsenal in Augusta warn people that the property is privately owned and that security cameras are in place.

The developer working to revitalize the Kennebec Arsenal in Augusta said he was forced to block roads into the property because of illegal activity.

This Wednesday photo shows the Kennebec Arsenal in Augusta. The property roads into the property have recently been blocked off and posted.

This Sept. 19, 2003, file photo shows the State House framed through an attic window of the Burleigh Building at the Kennebec Arsenal complex in Augusta.

This July 2010 aerial photo shows the Kennebec Arsenal in Augusta.

Taken by Simon Wing, of Waterville, in 1858, this is earliest known photograph of the Kennebec Arsenal.