Dozens of Jacksonville Sheriff's Office police officers are at the Otis Road Landfill in Northwest Jacksonville.
JSO tells Action News Jax they are currently following up on an investigative lead in an active case.
Police have not said what case it may be connected to.
Action News Jax sources say the search is related to the missing pregnant teen, Iyana Sawyer.
STORY: JSO releases surveillance pictures of missing Jacksonville pregnant teen
Action News Jax reporter Ben Becker is headed to the scene to gather the very latest information.
RELATED: Action News Jax sources: Uncle confesses to involvement in missing pregnant teen's disappearance | Uncle accused in pregnant niece’s murder ordered to remain in jail on no bond | NEW VIDEO: Investigators question suspect in pregnant teen's disappearance | Prosecutors: Uncle is suspect in pregnant Jacksonville teen's disappearance | Heavy police activity at landfill in Jacksonville; sources say it's related to missing pregnant teen | JSO releases surveillance pictures of missing Jacksonville pregnant teen | Search expands for missing pregnant teen, uncle arrested on unrelated charges