THE Hells Angels bikie gang is involved in a sophisticated tax fraud racket which has fleeced millions of dollars from taxpayers, police allege.

Early yesterday morning, a 15-month police investigation involving more than 200 officers culminated in the arrest of 10 men and one woman, including four alleged members of the bikie gang and three accountants.

"We have to ensure we have effective laws so that federal and state governments can deal with outlaw motorcycle gangs who too often are involved in drug crime in cities like [Sydney], in regions across NSW" ... Barry O'Farrell. Credit:Tamara Voninski

One, Mostafa ''Samir'' Jouayde, 30, was granted bail less than a fortnight ago to attend his own wedding. He has been president of the Hells Angels Parramatta chapter for several years and earlier this year oversaw the chapter's move to the Hells Angels from the Bandidos.

Another, Mahmoud ''Dibo'' Dib, 29, from Auburn, is a senior member of the same chapter. His house was peppered with bullets in 2009 in the middle of an outbreak of hostilities between the Bandidos and the Ibrahim family-associated street gang, Notorious.