A 'road rage' murder suspect has claimed that he was acting in self-defense when he shot dead a 44-year-old mother last month.

Erich Nowsch, 19, was arrested last Friday, a little more than a week after Tammy Meyers was fatally wounded by gunfire that police say came from a silver car that pursued the nurse and her 22-year-old son, Brandon Meyers, to the cul-de-sac outside their Las Vegas home.

However Nowsch's lawyers, brothers Conrad Claus and Augustus Claus, said after their client's first court appearance on Monday that they don't believe the case involved road rage.

The lawyers plan to review police reports and video evidence before talking more about Nowsch's defense.

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Erich Nowsch Jr. appears in a Las Vegas courtroom for his initial court appearance on Monday in Las Vegas. Nowsch remains jailed following his arrest on Friday on murder, attempted murder and other charges in the February 12 shooting that fatally wounded 44-year-old Tammy Meyers outside her home

Robert Meyers, left, the widower of Tammy Meyers, attends a hearing for his wife's accused killer, Erich Nowsch Jr. in court on Monday

Nowsch's lawyers told ABC that they believe he was acting in self-defense.

They later told CNN that Tammy Meyer's son, Brandon, pointed a gun at Nowsch before the shooting began and said that his client had received death threats.

However the victim's husband, Robert Meyers, said he thinks his wife realized she was in danger, and was fatally wounded after trying to lure a vehicle and motorist who threatened her away from her home.

That's not road rage, that's intentional, Meyers said in an interview after a court appearance by the suspect, his 19-year-old neighbor, Erich Milton Nowsch Jr.

'My wife was followed home and murdered,' Meyers said.

Meyers' theory adds yet another dimension to a case already marked by stunning revelations and conflicting accounts from police and the Meyers family.

Initially, the family said Tammy Meyers was shot in the head after a confrontation with another motorist while she drove her teenage daughter home from a late-night driving lesson at a neighborhood school.

The public was told that Brandon Meyers grabbed his gun and came out of the house, firing back at the fleeing silver car.

Last week, family members and police revealed that Tammy Meyers dropped her daughter at home and went back out with her son and the family's green Buick Park Avenue sedan to find the motorist who frightened her earlier.

Erich Nowsch Jr appears in a Las Vegas court on Monday. A March 10 preliminary hearing will determine if he should stand trial

What followed was a tire-squealing confrontation with a silver car and gunfire several blocks from the Meyers home. No one was injured.

Then, the fatal shooting on the cul-de-sac several houses from the Meyers home.

'I don't know what she saw,' Robert Meyers said on Monday. 'She's dead. I can't ask her. But this was intentional - to kill the person in the green car.'

Mr Meyers said that the story of what happened that night has been so confused as all the facts didn't come out immediately

He told ABC: 'My son was very hurt, thinking I was going to blame him for his mom going down, and he didn’t come forward with all the things.'

Mr Meyers said his daughter has helped him get a clearer picture of what went on.

According to the widower, a suspect, who is still at large, stood in front of the hood of his wife's car and threatened to kill her and his daughter.

Mr Meyers added: 'And after that, my daughter said my wife spun out to get away from this guy right on this street.

'My daughter said my wife was going as fast as she could. ... My wife was as great driver. She came from a good stock of drivers.'

Las Vegas police aren't commenting about the changing accounts, and aren't addressing whether Tammy Meyers' death resulted from a random road-rage shooting as it first appeared.

Captain Christopher Tomaino told the media Friday that police were still looking for an accomplice who was with Nowsch, and questions about the case will eventually be answered.

Robert Meyers, 49, was out of state when the shooting happened.

He said on Monday his wife and Nowsch knew each other — well enough for the teen to hitch up his saggy shorts when Tammy Meyers approached him in the neighborhood park, so she wouldn't have to tell him to do so.

It's not clear if they recognized each other during the shootings.

Robert Meyers said Nowsch was probably familiar with the family's Buick, but might not have seen it since the windows were tinted dark last summer.

Nowsch is charged with murder, attempted murder and firing a weapon from a vehicle.

He did not speak and did not enter a plea when he appeared in a Las Vegas court on Monday.

A March 10 preliminary hearing will determine if he should stand trial.

Clark County District Attorney Steve Wolfson would then decide whether to seek the death penalty.

'Nothing is off the table,' he told KTNV.

Police said Nowsch told friends he was at the park and became alarmed by a vehicle he thought was following him, so he called a friend to pick him up.

Las Vegas police say Nowsch bragged to his friends several hours after the shooting that he 'got those kids, they were after me, and I got them'.

Nowsch showed his friends a .45-caliber handgun and told them he fired several shots in the first encounter and 22 shots in the cul-de-sac, according to the police report.

Robert Meyers and police said Brandon Meyers fired three shots during the second shooting. It wasn't clear if he hit a silver Audi with Nowsch and at least one other person inside, police said.

Nowsch (left) is charged with the murder of Tammy Meyers (left and right), attempted murder and firing a weapon from a vehicle last month

Nowsch lived with his single mother and her one-month-old daughter about a block from the Meyers family home.

Tammy Meyers served as a mother figure to youngsters about the same age as her children, now 15 to 22 years old, Meyers said, and two Meyers sons attended high school with Nowsch.

Meyers said that at least once, Tammy Meyers gave the teen $20 when he said he was hungry. Meyers also recalled Nowsch earning pocket money washing cars outside the Meyers family home.

The teen and the neighborhood mom may have seen each other in passing the weekend of February 7-8, when Tammy Meyers walked the family dogs in the park where Nowsch often sat at a picnic bench with other teens, Robert Meyers said.

'Bunch of troublemakers,' Robert Meyers said. 'I wouldn't allow my kids to hang out with them.' But he denied there was any bad blood.