"He left us a final gift,"
Cleopatra Bernard wrote on Instagram, next to an ultrasound picture of the unborn child.
The news was later confirmed on the rapper's personal account, with the message: "May the new baby know his father was a legend."
At the time of his death, the musician had been charged with beating an ex-girlfriend while she was pregnant.
Cleopatra Bernard wrote on Instagram, next to an ultrasound picture of the unborn child.
XXXTentacion, real name Jahseh Onfroy, was shot outside a motorcycle showroom on Monday and died later in hospital.
Authorities said the rapper was ambushed by two suspects in an apparent robbery attempt.
A suspect, named as Dedrick Devonshay Williams, was arrested on Thursday and faces a charge of first-degree murder.
"Homicide detectives are seeking additional suspects," said Broward County Sheriff's Office. "The investigation continues."
XXXTentacion's lawyer, J David Bogenschutz, told People magazine his family "will be much calmer as soon as it is confirmed that all of the suspected participants are in custody".
