Authorities say they have raided some 69 homes and offices across Europe, confiscated several servers and arrested suspects in connection with online forums used to sell weapons, drugs and fake documents.

Germany's Federal Criminal Police Office said Monday that the raids were carried out in cooperation with police in Bosnia, Switzerland, France, the Netherlands, Lithuania and Russia last week.

The main suspect, a 27-year-old Bosnian, was arrested in his home country. Three German men, aged 21, 22 and 29, and two Syrian brothers, aged 19 and 28, were arrested in Germany.

The suspects, whose identities were not released, are accused of using online forums to sell illegal weapons and drugs like heroin, cocaine or amphetamines. They also offered criminal services like infecting computers with malware.