The FBI and local law enforcement uncovered a possible illegal biological laboratory in Las Vegas that has suspected connections to another illegal lab previously discovered in California.

The Las Vegas Metropolitan Police Department, the FBI, and local fire departments conducted a multiday search of a home in a residential neighborhood in northeast Las Vegas from Jan. 31 to Feb 2. Investigators say they collected over 1,000 pieces of evidence, including biological liquids and materials that are being sent for testing.