An FBI agent has reportedly shot dead a Florida man who allegedly had ties to one of the Boston bombing suspects.

US media reports say Ibragim Todashev, 27, was shot after becoming violent during questioning by the FBI in the city of Orlando.

He was reportedly a friend of Tamerlan Tsarnaev, who was killed in a shootout with police in April in the wake of the deadly marathon attack.

The FBI has not confirmed the media reports but says it will release more information on the deadly incident later today.

A Sri Lankan Tamil asylum seeker has become the second person to have an adverse security assessment overturned by ASIO.

Manokala Jenaddarsan, 41, was in the final stages of getting her refugee claim processed in 2011 when ASIO issued her with the adverse assessment.

She was held in indefinite detention in Villawood, but will now be released into the community along with her son.

A former Victorian police officer says superiors at the Ballarat Police Station failed to act when he was seriously bullied by a colleague.

A former colleague of a Sydney dance teacher charged with possessing child pornography and grooming teenage girls says there needs to be greater scrutiny of the dance industry.