St. Lucie County deputies have concluded their search for evidence in a missing persons case after receiving a tip. Sheriff Ken Mascara said the investigation began on March 13 and deputies used ground-penetrating radar and K9s to search near Palmetto Drive in Fort Pierce. Deputies also dug and sifted excavated.Stay up-to-date: The latest headlines and weather from WPBF 25 “It is too early to tell whether or not a crime has occurred,” said Mascara. “But our detectives are working nonstop to thoroughly investigate the area, and they will remain on site until our search is complete.”On Wednesday, the sheriff's office posted to its Facebook page stating detectives wrapped up their search that afternoon after not finding any evidence to support the tip.The sheriff's office did not disclose which missing person's case is under investigation.To report a tip to the St. Lucie County Sheriff's Office, click here.Follow us on social: Facebook | Twitter | Instagram | TikTokThis is a developing story and will be updated as information becomes available.