Teens accused of attempted robbery at knife-point

The teenager and his alleged co-offender, also aged 14, were arrested by police over an attempted aggravated robbery at Tuggeranong Skate Park on Wednesday.

The pair are alleged to have produced a knife and threatened a boy one had known from school, demanding to know what possessions he had on him.

The alleged victim told the teens he only had a backpack and a mobile phone, and then got on his bike and fled.

They chased him for about 200m, but the boy escaped and was able to report the incident to police.

Police executed two search warrants in Canberra's south, and found a knife, clothes, and two BMXs, which were allegedly stolen from a school's bike cage earlier that day.

Both boys, neither of whom can be named, appeared in the ACT Children's Court on Thursday for bail applications.

The court heard that one of the teenagers had been sentenced for similar crimes just one week ago.

He avoided jail time and was placed on a good behaviour order by Magistrate Karen Fryar, whom he again appeared before on Thursday for his latest alleged offences.

Police told the court they suspect the boy of involvement in other crimes since his sentencing, and are investigating whether he was responsible for a knife-point robbery that occurred after passengers were followed off an ACTION bus on August 18.

An officer told the court that the home of the alleged victim of the Tuggeranong Skate Park incident had been burgled on Wednesday.

At that point, the teenager began laughing.

Ms Fryar asked him: "Do you think that's funny [name removed]?"

"Well yes, because it wasn't me," the boy replied.

That teenager was refused bail, with Ms Fryar citing her concerns that he would reoffend.

The court also heard he has absconded 93 times since 2008.

"I can't help you if you can't help yourself," Ms Fryar told the boy at the end of his bail application.

The second 14-year-old also faced the court, but his bail application was stood over until later on Thursday.