Eleven motorcycle members were arrested after cops raided a brain cancer fundraiser in Long Island this weekend and found numerous guns and drugs.

Hundreds of members of the Pagan's Motorcycle Club and other like-minded motorcycle groups gathered at Duffy's Ale House in Lindenhurst on Saturday night to celebrate the club's 50th anniversary and the reopening of the Pagans Long Island chapter, and to raise money for 13-year-old Thomas Napoli, who is battling brain cancer.

Newsday reports that cops raided the "Bikers for Thomas Strong" event that night, and ended up seizing 5 handguns, 1 rifle, 1 shotgun, marijuana, cocaine, crystal meth, a billy club and three vehicles.

Eleven members from five different motorcycle groups were arrested altogether. You can get all the details on the charges below.

The following members of the Pagan Motorcycle Club were arrested, police say:

Michael John Parsnip, 42, of North Carolina, was charged with two counts of Criminal Possession of Controlled Substance 4th Degree, three counts of Criminal Possession of Controlled Substance 7th Degree for possessing crystal meth, cocaine, and morphine.

Jason Lucian Craft, 39, North Carolina, was charged with one count of Criminal Possession of Controlled Substance 4th Degree and three counts of Criminal Possession of Controlled Substance 7th Degree for possessing crystal meth, cocaine, and morphine.

Boudewijn Rob, 35, North Carolina, was charged with two counts of Criminal Possession of a Weapon 2nd Degree for possessing two loaded firearms.

Kenneth Reynolds, 34, North Carolina, was charged with two counts of Criminal Possession of a Weapon 2nd Degree for possessing two loaded firearms.

Adam Sockriter, 28, Delaware, was charged with one count of Criminal Possession of a Weapon 2nd Degree for possessing a loaded firearm and two counts of Criminal Possession of Controlled Substance 7th Degree for possessing crystal meth.

Todd Hathaway, 40, of Delaware, was charged with one count of Criminal Possession of a Weapon 2nd Degree for possessing a loaded firearm and one count of Criminal Possession of Controlled Substance 7th Degree for possessing crystal meth.

The following member of the Dirty Ones Motorcycle Club was arrested:

Julio Rosa, 43, of the Bronx, was charged with Criminal Possession of Marijuana 5th Degree.

Manuel Tull, 50, of New Jersey, was charged with charged with Criminal Possession of Marijuana 5th Degree.

The following member of the Steel Wheels Motorcycle Club was arrested:

Edward Otto, 58, of Pennsylvania, was charged with Criminal Possession of a Controlled Substance 7th Degree for possessing cocaine.

The following member of the Black Sheep Motorcycle Club was arrested:

Mark Harmon, 52, of New Jersey, was charged with Criminal Possession of Controlled Substance 7th Degree for possessing cocaine.

The following member of the Armored Saints Motorcycle Club was arrested:

Eneldo Rivera, 38, of New Jersey, was charged with Criminal Possession of a Weapon 4th Degree for possessing a billy club.

Napoli's family has set up a Go Fund Me page for anyone who wants to donate toward his ongoing health care.