MADRID — In a discovery that could create a new venue for literary pilgrims, Spanish investigators said on Tuesday that they might have located part of the remains of Cervantes, whose novel “Don Quixote” has enthralled readers over centuries with stories of its eponymous knight and his servant, Sancho Panza.

Cervantes, often lauded as having written the first modern novel, died in 1616 after requesting burial in a convent in Madrid where, for almost a year, investigators have been searching the subsoil for bones that they now believe to include some of the author’s.

“Everything coincides to lead us to believe that Cervantes is there,” a forensics expert, Francisco Etxeberria, said at a news conference in Madrid, Reuters reported.

The investigators cautioned, however, that it may be impossible to guarantee that the bones are those of the writer. Almudena García-Rubio, an archaeologist, said that there was “no confirmed genetic identification,” although DNA tests were being performed.