Both labs were well-masked, with one installed at a carpentry workshop while the other at a basement of a kitchen farm.
About six kilograms of methadone were seized, along with two tons of precursors.
The police say the two labs were operational for at least two years, with most of the methadone being produced for the EU market and some for third countries.
One of the labs was located in the Allaži parish of the Sigulda municipality. The other was at the Taurupe parish in Ogre municipality, the police say.
Seven men and two women were arrested in connection to the case, with three of them having criminal records of drug-related charges.
More than 100 police employees from different structures were involved in the investigation, including the counter-terrorism brigade Omega.
The below State Police video showcases the police operation in busting the labs.