An elderly Perth grandmother has been robbed by a gang of children as young as 11 years old.

Lili Bowes’s home in Shenton Park, in the city’s east, was turned upside down during a home invasion.

The 84-year-old had priceless jewellery and family heirlooms stolen and told 9News it was the “worst thing that has ever happened to her”.

Lili Bowes said the robbery was 'the worst thing that's ever happened' to her. (9news)

“Everything, all the drawers were turned out on to the floor, nothing was left untouched, nothing,” Ms Bowes said.

“It’s just shocking, absolutely, it’s for me, the worst thing that’s happened to me.

“You can’t start all over again can you?”

The group was arrested after catching a train, and police were able to recover some of her property.

The robbery comes during a spate of juvenile crime across Perth’s east in recent months. (9news)

The robbery comes during a spate of juvenile crime across Perth’s east in recent months.

A resident from Maddington resorted to using a baseball bat in retaliation to an attack.

“I’m not going to lie, I’m not remorseful one bit for what I did and honestly I wish I did it more,” Molly McGrath said.

“We’ve reached out to Gosnell’s police station, we’ve reached out to their family and no one’s done anything about it.

In one instance, a car window was smashed in. (9news)