Bike Rides. Chain Saws. Trailer Parks.

The world is just fucked.

ZION, Ill. (AP) - Investigators looking for clues in the stabbing deaths of two little girls who disappeared on a bike ride questioned the father of one of the youngsters Tuesday and took clothes and a computer from the family home, relatives said.

Police had been holding Jerry Hobbs, the father of 8-year-old Laura Hobbs, since he found the girl's body with that of her best friend, 9-year-old Krystal Tobias, in a park early Monday, family members said.

Hobbs has an extensive criminal history dating back to 1990 in Texas, according to Texas Department of Public Safety records.

He was convicted of aggravated assault after arguing with Laura's mother, Sheila Hollabaugh, in 2001, then grabbing a chainsaw and chasing other residents around the trailer park where they lived, according to Rick Mahler, a prosecutor in Wichita County, Texas. Someone eventually subdued Hobbs by hitting him in the back with a shovel.

"Jerry just got out of prison for aggravated assault and I think they're holding that against him," said Laura's grandfather, Arthur Hollabaugh. "I don't think he did it."