Passage: On 28 March 2004, an apparent coup attempt or mutiny around the capital Kinshasa, allegedly by members of the former guard of former president Mobutu Sese Seko (who had been ousted by Kabila's father in 1997 and died in the same year), failed. On 11 June 2004, coup plotters led by Major Eric Lenge allegedly attempted to take power and announced on state radio that the transitional government was suspended, but were defeated by loyalist troops.

Question: when was the first attempt of a coup in Kinshasa?
28 March 2004