Private investigator Bill Stanton announced in a press conference that undisclosed donors have hired him and offered $100,000 reward for Lisa Irwin’s “safe return and/or conviction of a person or persons involved in this horrible crime.”

Lisa Irwin's undated photo showed at a press conference on October 5.

The mysterious benefactors have a relationship with Lisa Irwin’s family and want the attention to be focused on the baby not on their identities, said Stanton on October 14.

The investigator will collaborate with Dr. Marisa Randazzo, a psychologist who worked for the U.S. Secret Service and specializes in threat assessment.

“I hope this opens up someone’s heart or someone’s eyes and they realize this is serious and we can get Lisa home safe and sound,” he said.

However, he did not add who to contact with information, or how the reward would be managed.

Lisa’s parents, Deborah Bradley and Jeremy Irwin, were not present at the news conference.

Lisa Irwin's parents, Jeremy Irwin and Deborah Bradley, at news conference on October 5. They begged Lisa's abductor to leave her in a safe place.(AP Photo/The Kansas City Star, Mike Ransdell)

The 11-month-old baby, Lisa Irwin, is missing from her parents’ home in the 3600 block of North Lister Avenue, Kansas City, Missouri, for almost two weeks since October 4.

Kansas City Police started an Amber Alert for Lisa Irwin on October 4 early in the morning. Deborah Bradley said she had seen her daughter, sleeping in her crib, last time at 10:30 p.m. on October 3 . When Jeremy Irwin arrived at home, on October 4, he found the door unlocked, the lights on, a window opened and saw Lisa was missing. Lisa’s father is an electrician and was working overnight shift. They immediately called 911 at 4:00 a.m.

Police canceled the alert eight hours and a half later. “Although the investigation and search for Lisa Irwin continues, an active Amber Alert is no longer necessary in this case. Lisa Irwin is still considered a missing/endangered juvenile,” said police Sgt. Stacey Graves.

Police and FBI investigators have been searching the woods near the Lisa Irwin‘s home, the fields, a well at an abandoned house, drainage areas and a landfill with no results.

“We haven’t really thought about shutting down. I think that will come sometime, but we hope to solve this case before then,” Capt. Steve Young of Kansas City Police told ABC News on October 14.

Lisa Irwin in a family photo provided by KCPD on OCtober 4.

Bill Stanton worked as a police officer and now is private investigator in New York. He came to joined the search for Lisa Irwin this week.

“I am seeing a family’s heart literally torn out of its chest,” he told Good Morning America.

“Let me try not to give a politician’s answer. Let me just say this, she doesn’t want to be discounted. She wants to be looked at, vetted and then once everyone feels she’s not a suspect, let’s move on,” he said when ABC News asked him if he was suspicious about mother’s involvement.

“Anything that I get goes directly to the Kansas City Police Department. I’m not here to compete with KCPD. I’m here to compliment them. They’ve given me my boundaries and I will respect those boundaries,” he said.

Stanton is not an official part of the investigation, but the Police accept any help they can get, said Young.

“Clearly, if anybody has all day long to help out, then that’s fantastic. If he should develop information and he could pass it on to us, why wouldn’t we accept it?“

Earlier on October 15, family members expressed their gratitude for the Kansas City community, authorities and media for their help in searching Lisa Irwin. They placed pictures in the baby’s grandparents’ yard in the 5200 block of North Walrond in the Northland.

Michael Lerette said he was Bradleys’ cousin from Texas and Marine who has served overseas. He asked on family behalf that anyone with information call a tip line or 911.

A firefighter searches the area for Lisa Irwin on October 4.(AP Photo/The Kansas City Star, Todd Feeback)

“I’d gladly give my life to bring Lisa home safely. We’re hanging in there. Please, please, please keep praying,” he said.

Wanting to keep Lisa’s image in the media, the family posted home made videos with baby on YouTube.

Lisa Irwin was born on November 11 2010, she has blue eyes and blond hair. She is 30 inches (76 cm) tall and weighs 30 pounds (14 kg). She has two bottom teeth, a small bug bite under her left ear, a beauty mark on her right outer thigh and currently has a cold with a cough.

Lisa Irwin was wearing purple shorts and a purple shirt with white kittens on it.

Anyone who has information on Lisa Irwin was urged to call the TIPS Hotline at 816-474-8477.

Lisa Irwin in a family video

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Bill Stanton talks to ABC News reporter on Lisa Irwin case (video)

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