ANTIOCH -- Three brothers were arrested and officers seized at least two guns while serving a search warrant on a house suspected of being used for drug sales, police said.

Cedric West, 22, Frederic West, 21, and Patrick West, 20, were taken to the Martinez Detention Facility on suspicion of multiple drug and weapons charges. Cedric was already on probation for an 2009 armed robbery conviction.

The warrant was served at 7 a.m. Wednesday at the home in the 4900 block of Parkgreen Circle. While SWAT team members were entering the home, one of the brothers tossed a loaded handgun out of a window, police said, and a shotgun was also found hidden inside the home.

The search found at least three to four ounces of ecstasy, a small amount of marijuana, scales, and a large amount of packaging supplies according to Antioch police Sgt. Steve Bias.

All three brothers are being held on suspicion of conspiracy, possession of marijuana for sale, sale of marijuana, possession of a controlled substance while armed, and possession of a controlled substance for sale. Cedric West also faces charges related to violating his probation and being a felon in possession of a firearm and ammunition. He is being held without bail; the other two brothers are being held on $190,000 bail each.

Contact Daniel M. Jimenez at 510-262-2728. Follow him at Twitter.com/DMJreports.