Former East 17 band member Brian Harvey has been arrested over claims he sent malicious tweets.
The 43-year-old singer, who made his name in the 90s boy band, is being questioned by police in north London.
The Metropolitan Police confirmed they received an allegation of malicious communications relating to a Twitter account.
Officers said in a statement: “On Wednesday, 22 November, a man in his 40s was arrested on suspicion of malicious communications and has been taken to a north London police station. Enquiries continue. “
Harvey sold millions of records as one quarter of pop group East 17, alongside Tony Mortimer, John Hendy and Terry Coldwell.
Originally hired as a backing singer and dancer, he was quickly promoted to lead singer thanks to his vocal talents.
However, Harvey’s comments over Class A drug ecstasy during a 1997 radio interview led to his swift departure from the group.
In 2005 he hit the headlines again after running over himself in his Mercedes-Benz, an accident he blamed on eating too many baked potatoes.
The band has reunited several times under the rebranded name E-17, and released their sixth studio album earlier this year, minus Harvey and Mortimer and with new member Robbie Craig.