(CNN) -- A Chicago baby who was killed when someone fired on her father's minivan last week was shot once, not multiple times as previously reported, police said Monday at a press conference.

Jonylah Watkins' funeral is Tuesday in Chicago's Hyde Park, according to CNN affiliate WGN-TV. Friends, family and strangers saddened by the infant's death gathered to see a tiny coffin that also had a pink teddy bear inside, the outlet reported.

Chicago police Superintendent Garry McCarthy also told reporters on Monday that the baby's father was not changing 6-month-old Jonylah Watkins' diaper when she was shot on March 11, as previously reported, but rather that the baby was simply on her father's lap in the vehicle.

And Jonylah's mother wasn't shot in the leg while she was pregnant with Jonylah as some news accounts had said, according to McCarthy.

Jonathan Watkins was also shot while he and his child were in a parked minivan on Chicago's South Side on the afternoon of March 11, police said.

Authorities have said they believe he was the target.

Jonylah's father is cooperating with police, McCarthy said, added that police have surveillance footage of a van in which the shooter sped away after the shooting.

McCarthy said he is confident that police will make an arrest in the case. But they don't have anyone in custody.

CNN's Katherine Wojtecki and Shawn Nottingham contributed to this report.