A car has been found during the search for a man suspected of killing the parents, grandmother and uncle of a baby girl found abandoned in a US state.

Austin Robert Drummond, 28, is suspected of having murdered four relatives in Tennessee - James M Wilson, 21, Adrianna Williams, 20, Cortney Rose, 38, and Braydon Williams, 15, who were identified on Wednesday.

Mr Wilson and Adrianna Williams were the parents of the infant found alive in a car seat in a front yard on Tuesday afternoon.

Police say Drummond then dropped off the baby and made people aware of the child, in an act of "compassion".

However, officers added Drummond remains on the run and should be considered "armed and dangerous".

Ms Rose was Adrianna and Braydon Williams' mother, according to District Attorney Danny Goodman

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