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Ottawa shooting suspect's mom: I cry for the victims, not my son

A U.S. law enforcement official confirms to CBS News that this picture is believed to be Michael Zehaf-Bibeau, the alleged Ottawa shooter.

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Last Updated Oct 23, 2014 4:50 PM EDT

OTTAWA, Ontario -- The mother of the man accused of killing a soldier at Ottawa's war memorial then storming Parliament before being shot dead says she is crying for the victims of the shooting, not her son.

In a brief and tear-filled telephone interview with The Associated Press Thursday, Susan Bibeau said she did not know what to say to those hurt in the attack.

"Can you ever explain something like this?" she said. "We are sorry."

Investigators offered little information about the gunman in Ottawa, identified as 32-year-old petty criminal Michael Zehaf-Bibeau.

Canadian police conceded Thursday that Zehaf-Bibeau was the lone gunman, the second attack in three days in what the prime minister described as terrorism.

Bibeau said she was devastated for the victims of the attack.

"If I'm crying it's for the people," she said, struggling to hold back tears. "Not for my son."

Bideau and her husband had earlier sent the AP a lengthy email expressing horror and sadness at what happened.

"I am mad at my son," the email said, explaining that he seemed lost "and did not fit in."

"I his mother spoke with him last week over lunch, I had not seen him for over five years before that," the email said. "So I have very little insight to offer."

Law enforcement and U.S. government sources told CBS News the suspect was born in Quebec in 1982. He is from British Columbia, recently converted to Islam and called himself Michael Abdul Zehaf-Bibeau. Sources said he had a history of drug addiction prior to his conversion.

Royal Canadian Mounted Police commissioner Bob Paulson said Thursday that Zehaf-Bibeau had recently applied for a passport, and authorities now believe he intended to go to Syria.

"The passport was part of his motivation. His application was not rejected. His passport was not revoked," Paulson said. "He was waiting to get it and there was an investigation going on to determine to see whether he would get a passport."

A U.S. law enforcement official told CBS News that the Canadian government was investigating whether the suspect was in contact with known militants in Syria -- possibly the Islamic State of Iraq and Syria (ISIS).

The heart of the capital city of Ottawa had been in lockdown after Wednesday's attack, with fears that other gunmen might be on the loose. Ottawa police Constable Marc Soucy confirmed to The Associated Press Thursday that police are satisfied there was one attacker. Ottawa police Chief Charles Bordeleau told the Canadian Broadcasting Corp. that "there is no longer a threat to public safety."

The two attacks stunned Canadians and raised concerns their country was being targeted for reprisals for joining the U.S.-led air campaign against the extremist Islamic State group in Iraq and Syria.

On Thursday, Prime Minister Stephen Harper visited the National War Memorial where the soldier was killed to lay a wreath. A man was detained by police near where Harper put down the wreath. Soucy said the man tried to breach the crime scene and thought there would be minor charges if he's charged.

Earlier, Harper called the shooting the country's second terrorist attack in three days. A man Harper described as an "ISIL-inspired terrorist" on Monday ran over two soldiers in a parking lot in Quebec, killing one and injuring another before being shot to death by police. Like the suspect from Wednesday's shooting in Ottawa, he was a recent convert to Islam.

Witnesses said the soldier posted at the National War Memorial, identified as Cpl. Nathan Cirillo, was gunned down at point-blank range by a man carrying a rifle and dressed all in black, his face half-covered with a scarf. The gunman appeared to raise his arms in triumph, then entered Parliament, a few hundred yards away, where dozens of shots soon rang out, according to witnesses.

People fled the complex by scrambling down scaffolding erected for renovations, while others took cover inside as police with rifles and body armor took up positions outside and cordoned off the normally bustling streets around Parliament.

On Twitter, Canada's justice minister and other government officials credited 58-year-old sergeant-at-arms Kevin Vickers with shooting the attacker just outside the MPs' caucus rooms. Vickers serves a largely ceremonial role at the House of Commons, carrying a scepter and wearing rich green robes, white gloves and a tall imperial hat.

At least three people were treated for minor injuries.

In Washington, President Barack Obama condemned the shootings as "outrageous" and said: "We have to remain vigilant." The U.S. Embassy in Ottawa was locked down as a precaution, and security was tightened at the Tomb of the Unknown Soldier at Arlington National Cemetery just outside Washington.

Harper vowed that the attacks will "lead us to strengthen our resolve and redouble our efforts" to keep the country safe and work with Canada's allies to fight terrorists.

Court records that appear to be the gunman's show that he had a long rap sheet, with a string of convictions for assault, robbery, drug and weapons offenses, and other crimes.

The Canadian Broadcasting Corp. had video of the gunman going to his car alone with his weapon after the shooting at the memorial. The car was later spotted parked in front of Parliament Hill, just down the block.