By Stephanie Pappas | LiveScience.com

The hunt for King Richard III’s grave is heating up, with archaeologists announcing today (Sept. 5) that they have located the church where the king was buried in 1485.

Richard III and his queen, Anne of Neville, appear in a stained glass window in Cardiff Castle.

"The discoveries so far leave us in no doubt that we are on the site of Leicester’s Franciscan Friary, meaning we have crossed the first significant hurdle of the investigation," Richard Buckley, the lead archaeologist on the dig, said in a statement.

Buckley and his colleagues have been excavating a parking lot in Leicester, England, since Aug. 25. They are searching for Greyfriars church, said to be the final resting place of Richard III, who died in battle during the War of the Roses, an English civil war. A century later, Shakespeare would immortalize Richard III in a play of the same name.

After his death in the Battle of Bosworth Field, Richard III was brought to Leicester and buried at Greyfriars. The location of the grave, and the church itself, was eventually lost to history, though University of Leicester archaeologists traced the likely location to beneath the parking lot for the Leicester City Council offices.

The team announced last week that their first two trenches turned up glazed floor-tile fragments, medieval roof tile and other building fragments, suggesting that they were digging in the right place to find Greyfriars. Now, a third trench has revealed the alignment of the building’s walls.

Inlaid floor tiles unearthed from the Greyfriars church site.