BN will hold the next general election "very soon", before former prime minister Dr Mahathir Mohamad's new party Parti Pribumi Bersatu Malaysia (Bersatu) gets a foothold, predicts former deputy prime minister Musa Hitam.

"I want to tell you that I think BN will call for election very soon.

"If it is true, the biggest challenge for those who oppose the government will be to get together and become a cohesive force," Musa told a press conference after launching his new book, "Frankly Speaking", in Kuala Lumpur today.