Former East 17 singer Brian Harvey has been arrested on suspicion of sending malicious communications.
Scotland Yard said they were called to an address in Walthamstow, east London, on Thursday following reports a man was threatening to harm himself.
Officers performed a welfare check and a man in his 40s was arrested, police said.
Following a physical examination by a doctor where he was deemed fit, Harvey, 44, was taken into police custody.
He did not suffer any injuries, according to police.
Harvey shot to fame in the 1990s as the lead singer of pop band East 17, later renamed E-17.
The boy band sold millions of records and scored several top 10 hits, including 1994 Christmas number one Stay Another Day.
Harvey was left with severe injuries in 2005 following an accident in which he ran over himself.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here