A Florida family, which included a pregnant woman, were hospitalized after consuming meat laced with the hallucinogenic drug LSD, according to the Tampa Police Department.

The family of four was sickened Monday night and did not initially know what caused the "mysterious illness," but the county medical examiner's office determined it was the psychedelic drug, officials said.

"It is still under investigation how the drug ended up in the family's meal," according to the police statement. "At this point, it is not clear if a crime has occurred."

The woman, Jessica Rosado, 31, was nine months pregnant and doctors induced labor, authorities said.

Rosado gave birth to a healthy baby boy and released from the hospital Thursday.

Her boyfriend, Ronnie Morales, 24, along with Rosado's two children - Elyana Serrano, 7, and Rayna Serrano, 6 - also fell ill and started experiencing hallucinations. All three received tracheal intubation and have since been released from the hospital.

Police said the ribeye steak came from a Walmart store. It appears to be an isolated incident and the store is cooperating with officials, police said.

Walmart told ABC News that the contaminated meat was a "thin-cut bottom round steak."

The company told ABC News that all the meat that at Walmart comes to the store pre-packaged and sealed and the store employes do not handle the meat.

In addition to the statement released earlier Walmart said that the company has been in touch with the supplier and there are no reports of additional incidents.

The federal and state departments of agriculture have joined the Hillsborough County Health Department and Tampa Police in their investigation.