CHICAGO (REUTERS) - The family of a 55-year-old black grandmother who was accidentally killed by a Chicago police officer called for an end to secrecy around police misconduct cases as her funeral was held on Wednesday.

Hundreds of people attended the funeral at a Chicago church for Bettie Jones, who was fatally shot in late December after police responded to a call about a neighbor's son threatening his father with a baseball bat. The officer also shot and killed Quintonio LeGrier, 19, a black college student. Ms Jones, a mother of five and grandmother of nine, was shot when she answered the door for police, said a lawsuit filed this week by her family.

At Wednesday's funeral, mourners filed past Ms Jones' open red casket, surrounded by red and white roses and daisies, at New Mount Pilgrim Missionary Baptist Church on the city's West Side.

Visitors included the Reverend Jesse Jackson, a civil rights activist.

The shootings came after weeks of protests over the release of the video of a white police officer's fatal shooting of black teenager Laquan McDonald in 2014.

Since the release of the McDonald video, Chicago Mayor Rahm Emanuel has ousted his police superintendent and called for changes in the way police are trained.

The police department has also become the subject of a federal civil rights investigation.