Father and son cheated the lottery for 10 years, they won more than $20 million

A federal court on Monday convicted a Massachusetts father and son of illegally winning more than $20 million in lottery winnings by lying on tax returns to avoid paying more than $6 million in federal taxes.

Ali Jaafar (63) was sentenced to five years in prison, while his 29-year-old son Yousef Jaafar was sentenced to 50 months in prison, Telegraph reports.

They were also ordered to pay more than $6 million in restitution, and to return any money they made from the fraud.

In December, the two pleaded guilty to one count of conspiracy, one count of conspiracy to commit money laundering and one count of filing a false tax return, CNN reports.

“This case is, in essence, an elaborate tax fraud. Over the course of a decade, this father and son team defrauded the Massachusetts State Lottery Commission and the IRS to pocket millions of hard-earned taxpayer dollars,” Acting U.S. Attorney Joshua S. Levy said in a press release.

“These defendants worked together to recruit an extensive network of accomplices and spread their lottery fraud throughout Massachusetts, avoiding detection by repeatedly lying to government officials,” said Valerie S. Carter.