Adel Daoud, a U.S. citizen, was 18 when he was arrested in September 2012 on charges of plotting to bomb downtown Chicago.
The family's attorney, Vincent Paravato, says the ashes given back to the family in the box were not their mothers.
William Evertz's mom said her son has loved police officers since he was 2 years old and decided he wanted to have a "kindness day" to treat officers to a healthy lunch.
A truck laden with explosives blew up at a police checkpoint near the town of Cizre, in Sirnak province.
An out-of-the-box idea to become the tiny house capital of America and draw in newcomers may change the tide in Spur, Texas.