PHOENIX -- Operation "Piano Man" launched by the Phoenix Police Department results in 87 arrests and seizures of cocaine, heroin, marijuana, guns and more than $200k in cash.

Ten of those arrested were the accused dealers and all of them were illegal immigrants, police said.

Investigators from the Phoenix Police Department's Drug Enforcement Bureau served six search warrants in the east Valley area late Thursday night and early Friday morning.

Police said those arrested had maintained a very well organized drug smuggling operation and established list of customers that included teenagers and young adults in the east Phoenix area.

Officers said after they arrested the dealers, they launched the second phase of the operation. Officers delivered and sold various drugs to the customers.

They said in this phase of the program, dozens of people were arrested as they attempted to purchase drugs.

Police said many of the customers were teens who still live at home with their parents and began their habit with perscription drugs from their parent's medicine cabinets.