JOHN CRAWFORD 22, SHOT AND KILLED BY WALMART POLICE, DAYTON, OHIO,

WARNING: GRAPHIC IMAGES: Surveillance footage from an Ohio Walmart store, where police killed a young black man who was holding a toy rifle (sold in Wal-Mart) and talking on his cellphone, shows he was was shot from the side as he moved to run away from advancing officers.

The family of a young black man who was killed by police in an Ohio Walmart while holding an unloaded BB rifle and speaking on his cellphone have called for action to be taken against a 911 caller who claimed he was pointing the gun at people.

John Crawford III was shot dead last month by an officer responding to an emergency call made by Ronald Ritchie, a shopper standing 100ft away, who repeatedly stated to the dispatcher that Crawford was pointing the air rifle at customers.

Ronald Ritchie, lied on 911 call

Surveillance footage and audio recordings released after a grand jury declined to indict the officer who shot Crawford showed that Crawford was holding the rifle at his side and pointing it to the floor at the time when Ritchie alleged that “he just pointed it at, like, two children”.

Crawford’s father and the family’s attorney said that Ritchie, 24, should be questioned by police over the discrepancy between the footage and his allegation, which he made about 80 seconds before Crawford was shot, and confirmed when asked soon after. Knowingly “making false alarms” is a crime under Ohio law punishable by a fine or jail sentence.

“He was the catalyst, if you will, in the whole sequence of events leading up to my son’s death,” John Crawford Jr told the Guardian. “It was a crank call. He excited the call, and exaggerated the call, and frankly it was just a bunch of lies.”

Ritchie declined to comment in an online message on Friday. He has previously maintained that Crawford posed a threat to shoppers and that the 911 call was justified.

Special prosecutor Mark Piepmeier stressed on Wednesday that the responding police officers were led to understand that Crawford was an active threat. One even called back to the dispatcher to check that the 911 caller said Crawford was pointing the rifle at people. “If he’s not there, we may not be here,” Piepmeier said of Ritchie at a press conference.

Michael Wright, the attorney for the Crawford family, said Ritchie “should be questioned on why the footage and what he said does not match”. Wright said: “He’s basically lying with the dispatchers, he’s making up the story. So should he be prosecuted? Yes, I believe so.”

Ritchie had said of Crawford near the start of his 911 call: “He’s, like, pointing it at people.” He subsequently told the Guardian that “at no point did [Crawford] shoulder the rifle and point it at somebody”, stressing instead that he had been “waving it around” and that the muzzle moved in the direction of other shoppers.

The surveillance footage released on Wednesday shows Crawford passing shoppers with the gun at his side. After arriving in a corner of the store, he is seen swinging the rifle at his side and holding it towards a store shelf containing pet products while standing alone and talking on his cellphone for five minutes.

The children who Ritchie appeared to claim were under threat from Crawford were in the store with their mother, Angela Williams. Williams, 37, died of a heart attack in the panic that ensued among customers following the police shooting. “I hope that he’s happy with himself,” her teenage son said of Ritchie in a Facebook post earlier this month.

Ritchie also told several reporters after the shooting that he was an “ex-marine”. The Guardian disclosed last month that he was thrown out after seven weeks in 2008, after being declared a “fraudulent enlistment”. He states that the problem was a mix-up in his paperwork.

In January 2012, Ritchie pleaded guilty in the Montgomery County municipal court to theft. All records of the incident have been expunged by the court and the Huber Heights police department. In 2010 he was fined $250 and given a year’s probation after being convicted by Miamisburg municipal court of possession of drug paraphernalia.

Ritchie and his wife, April, have not spoken publicly since his Guardian interview. Both have changed their names on social media. The day before he called 911 about Crawford, Ritchie posted a meme on his Facebook page featuring the comedian Gabriel Iglesias. “Me, racist? The only race I hate is the one you have to run,” it read. The post has since been removed.

One month later, Ritchie shared with his friends a story from the Tea Party News Network about a group of black men assaulting a white couple in Missouri. The story condemned President Barack Obama and Eric Holder, the attorney general, for ignoring the attack after speaking publicly about the killing of Michael Brown, an unarmed 18-year-old, in Ferguson, Missouri, last month. It described them as “race hustlers”.

April Ritchie told reporters following the Walmart shooting that she had warned other shoppers to avoid Crawford in the store. When the Guardian requested an interview with April Ritchie via social media, she replied in a message that she was not April Ritchie. After being reminded that she was, she threatened to “contact the police and file harassment charges”.