Iowa news : 2 Iowa girls still missing ,$15,000 reward on found girl

Two young Iowa girls remain missing despite the efforts of more than 1,100 volunteers and law enforcement officers to find them, authorities said.

Authorities in Evans dale said Sunday night there were no indications cousins Elizabeth Collins, 8, and Lyric Cook-Morrison, 10, were the victims of foul play, though the possibility had not been ruled out, The Des Moines Register reported.

"We've covered everything we can cover with civilian people," Marcus Norman, the Evansdale Fire Department's volunteer coordinator, said. "Law enforcement is still working on the residential areas and things of that sort."

A $15,000 reward is being offered in the disappearance of the girls, who were last seen about 12:15 p.m. Friday by their grandmother as they headed out for a bike ride. Their bikes were found about 4 p.m. Friday at nearby Meyers Lake. Elizabeth's purse and cellphone were found about 20 feet away.

Dragging the lake and an extensive search of the entire city and surrounding vicinity by the army of volunteers turned up no further sign of the girls, the newspaper said.

The girls' families said they haven't given up hope.

"Sometimes when you think about it, you wonder if they're dead somewhere, but you try to push those thoughts out of your mind," said Misty Cook-Morrissey, Lyric's mother. "It's been good talking to people. ... It keeps your mind off of what's happening."

Elizabeth Collins' mother, Heather Collins, said would be unusual for her daughter to stray very far from home on her own.