Zeegers was a key witness in the 2007 murder and extortion trial of suspected crime boss Willem Holleeder.
[1] Zeegers testified in court over two days that Holleeder and his associates had extorted millions of dollars from Endstra between 2000 and 2004.
[2] The sudden and unexpected death of Zeegers led to speculation that he may have been murdered and received much coverage in the Dutch media.
[2] According to a story in the Dutch newspaper, Volkskrant, Zeegers was found to have ecstasy in his body that consisted of 97% pure MDMA, which is extremely high.
[2] Zeegers' Brazilian girlfriend, who bought the drugs, was held in connection with the case before being released, though she remains a suspect.