Marcia Collins, the sister of Sean Riggs told Daybreak that she is happy that the IPCC has apologised to her family.
Last year an inquest into Sean Rigg's death found that officers had used "unsuitable force" when he died in Brixton police station in 2008.
Marcia said: "It's been a long struggle, we shouldn't have had wait five years to get to this stage."
More top news
An astronaut has set off for NASA's first year-long mission to the International Space Station - leaving his identical twin back on Earth.
Taking money from the rich to give to the poor is a debate as old as Nottingham's mythic son, so why are people still so divided on welfare?
An unsettled weekend of weather is in store as conditions turn wet and windy from the west tonight.