The man was arrested at Arlanda airport on Thursday afternoon after being arrested by police in Spain. The prosecutor at the Economic Crimes Authority had issued a European arrest warrant.
The suspicions include, among other things, aggravated fraud, aggravated money laundering and aggravated accounting fraud. The case involves around 40 plaintiffs and approximately 35 million kronor in suspected criminal proceeds.
A detention hearing will be held on Friday at 2 pm at Södertälje District Court.
Three suspected accomplices were arrested in January in Stockholm.
"The criminal scheme has involved deceiving Swedish private individuals into investing in various types of real estate projects in Spain. The scheme resembles a classic pyramid scheme", said prosecutor Veronica Närfors in a previous statement.
