LONDON - Former Sugababes singer Keisha Buchanan is planning to sue ex-bandmate Amelle Berrabah over allegations of bullying, it has emerged.

The 25-year-old Buchanan had quit the band in September this year after growing discomfort with fellow Sugababes Berrabah and Heidi Range.

The band had soon replaced her with Eurovision star Jade Ewen.

Reports had emerged that Buchanan exit had come after Berrabah accused her of being a bully.

According to the Daily Mirror, Buchanan is now considering legal action against Berrabah and planning to talk to her lawyers soon.

“To those who accuse others of being a bully for self gain, think first! It’s a very serious allegation,” the Daily Star quoted Buchanan, as writing on her Twitter.com blog. (ANI)