Dutch police have discovered what they say is the biggest and most professional laboratory for the production of highly addictive crystal meth ever found in the Netherlands.

The lab, raided on the basis of information gleaned from an encrypted chat service, was located in two large sheds on land near the village of Nederweert in Limburg. One person, a 62-year-old Polish national, was in a house on the property at the time and arrested.

Specialist police teams are now dismantling the lab and taking samples of the chemicals, police said in a statement. That is likely to take until Sunday.

Police say more arrests cannot be ruled out.

Last year, Dutch police closed down 32 meth labs, more than three times the 2019 total.