Salt Lake City ? Hundreds of volunteers searched rugged hills and city neighborhoods Thursday for a 14-year-old girl police say was taken at gunpoint in her pajamas from her million-dollar home.

Despite more than 1,000 tips, police said they had made little headway in the baffling disappearance Wednesday of Elizabeth Smart.

The reward for her safe return was raised to $250,000.

Wednesday, an intruder forced open a window at Elizabeth’s home and went into the bedroom where the teen-ager and her 9-year-old sister slept, police said. The rest of the family was also asleep. Police said the gunman warned the younger girl her sister would be harmed if she told anyone.

A family member said the Smarts had a security system in the home designed to alert them to an intruder, but it didn’t have a loud alarm and didn’t ring into a security agency.

No ransom demand had been made as of Thursday, police said.

“We’re not in a position where we can conclude whether this was a random or targeted victim,” Police Chief Rick Dinse said.

About 700 volunteers in groups of 10 to 20 fanned out through the streets and into the steep foothills around the city in response to a desperate plea from the girl’s father.

Searchers knocked on doors and asked if anyone had seen anything suspicious. Others hiked through a cemetery above the town, and combed the bushes in a park.

“A lot of things have not panned out. We don’t feel we’re any closer” to solving the case, the police chief said. As for suspects, Dinse said, “Nobody’s been eliminated.”

The reward was initially $10,000, but donations from the community boosted the fund.

Elizabeth’s parents went on national TV to renew their plea for their daughter’s return.

“This person, whoever he is, I don’t think he knows what he’s doing,” Elizabeth’s father, Edward, said on NBC’s “Today.”

Smart, a real estate and mortgage broker, and his wife, Lois, have lived in their seven-bedroom house since 1996. The couple have four boys and two girls.

The family’s house is on the market for $1.19 million, and police were looking into whether a potential buyer toured the home and later returned.