The ex-partner of a young mother who was fatally struck in a hit-and-run south of Brisbane is the second person charged with her murder, police have confirmed.
Kiesha Thompson, 23, was walking home on a footpath on Allamanda Drive at Daisy Hill after dropping her daughter at daycare on Friday morning when police allege her ex-partner's new girlfriend struck her with a four-wheel-drive.
She later died in hospital.
READ MORE: Family describe alleged murder of young mother south of Brisbane as 'senseless act'
The alleged driver Larissa Rita Mae-Leigh Sant, 24, faced court yesterday on one count of murder, hours before police also arrested her partner, a 27-year-old man in Logan.
Detective Inspector Chris Knight today confirmed the Acacia Ridge man is Thompson's ex-partner and that their relationship had been over "for some months".
He has also been charged with murder and police will allege he was "equally as involved" despite there only being "one person driving that car… one sole occupant in that vehicle," Knight said.
Knight said information from the community had been crucial to the investigation, which is ongoing.
Police are asking anyone with information to come forward to Crime Stoppers, while local police and will set up a high-visibility presence on Allamanda Drive from tomorrow morning.
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Knight said investigators had spent yesterday with Thompson's family, whose grief was "difficult to put into words".
"(The arrests are) an important milestone in our investigation but that's all it is at this stage, it doesn't bring Kiesha back," he said.
"The impact it will have on their family is tremendous.
"I've been investigating for more than 30 years and spent a large portion of my career doing homicide and death investigations but there are features we have identified in this investigation that will stay with me."
The young mother's family issued a video statement yesterday, describing the alleged crime as "senseless and cowardly".
"My sister had nothing short of a difficult life but in the last couple of years, she worked tirelessly to create the best life for her child who was the absolute light of her life," brother Koby Torto said.
"She was taken from us in a cowardly act.
"We can't stress enough her daughter was the light of her life and we will support her throughout her whole life."
The family has created an online fundraiser for Thompson's child.
Sant was remanded in custody after her matter was mentioned in Ipswich Magistrates Court.
She was not able to apply for bail due to the serious nature of the charge.
The man is due to face Brisbane Magistrates Court today and Sant is expected at Beenleigh Magistrates Court on July 31.