Christian Morales was charged with stabbing Carlos Santos in the head on Liberty Avenue in June.
The 4-year-old girl was found dead at a shelter for homeless families in Briarwood, police said.
He also sprained a correctional officer's wrist while at Rikers last year.
The victim was 46-year-old Rigino Montero of Tiffany Street.
Jeida Torres was killed by her mom's husband, Kelsey Smith, in their Bushwick home, police said.
Iman Thomas, 38, was found with stab wounds in the backyard of her East 43rd Street home, police said.
Jeffrey Wong told investigators that Khemraj Singh "fell on his knife," prosecutors said.
Aaron Powell was shot and killed about a block from his Union Street home, police said.
The 80-year-old man was found dead in a bathtub on the first floor after a garage fire, police said.
Bobby Roberts, 22, was killed outside of his home on Sept. 25.
Joshua Acosta, 18, was stabbed to death Monday in The Bronx.
Justin Fallu was killed in a fight in Pelham Parkway, police said.
Bobby Roberts was fatally shot outside his Moore Street apartment building, police said.
Manuel Rosario died after Jason Rivera attacked him at a Mott Haven bodega, officials said.
NYPD initially searched for surviving son, but now believe triple killing was murder-suicide.
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