An electronically altered road sign was spotted in Michigan today, Monday, April 9, which broadcast a racial epithet aimed at Trayvon Martin.

The Detroit Free Press reports that a sign posted alongside I-94 in Detroit was changed to read “Trayvon A N—-” sometime after 1 a.m. Monday.

The road sign was originally warning of traffic conditions ahead before police believe someone broke into the cabinet and changed the message using a keyboard that’s housed inside.

Rob Morosi, the Michigan Department of Transportation spokesman, told the Free Press that this is not the first time an incident like this has happened. In the past however, road signs were hacked to warn of zombies, ghosts or goblins. “Nothing ever to the extent of the inappropriateness that we’ve seen here,” Morosi said.

MDOT is working with the Michigan State Police to try to determine who is responsible.

As previously reported a special prosecutor announced today that she’s decided against sending the Trayvon Martin case to a grand jury.