According to reports in the Australian media today, the 24-year-old actor was arrested in Sydney's Kings Cross at the weekend.
Lasance's manager David Sheridan told The Australian: "It's a legal matter and Todd is co-operating with authorities."
The soap favourite is best known for playing Summer Bay's Aden Jefferies. However, he recently announced that he was to quit the show and hoped to secure Hollywood roles.
Speaking of his ambitions in a recent interview, he explained: "Failure is not an option. I'm willing to put in 20 years over there if I have to because this is what I want to do.''
Earlier this year, Lasance won the title of 'Most Popular Actor' at Australia's annual Logie Awards.