Clinton’s mayor says he is looking to move forward with help from the community as the investigation into the cause of a massive fire concludes.Clinton Mayor Randy Randall said Musgrove Street has fully reopened after the city cleared the leftover debris from the House of Pizza fire last August. “It looks so much better than it did,” Randall said about the cleanup. “It’s a clean hole in the ground there, so we’re very proud that we’ve been able to get this area cleaned up and start moving forward now.”Officials said Tuesday the cause of the fire that destroyed four buildings in the city’s downtown has been ruled as “undetermined.”Randall said the properties were released to the city last month. The Clinton Economic Development Corporation paid more than $129,000 to fund the debris cleanup.”It’s a key part,” Randall said about the missing buildings on Musgrove Street. “It looks like we got …