Alexa-Marie died in hospital after police were called to the family home in Queen Bee Court, Hatfield, at 9.30pm on Wednesday.
In a statement released through police, Alexa-Marie's family paid tribute to the youngster:
A man has been charged with murdering his four-year-old daughter.
Carl Wheatley, 30, is due to appear at Hatfield Magistrates' Court today over the killing, Hertfordshire police said.
Alexa-Marie died in hospital after police were called to the family home in Queen Bee Court, Hatfield, at 9.30pm yesterday.
A post-mortem to establish the cause of death will take place on Monday, the force added.
A 30-year-old man has been arrested on suspicion of murder after a four-year-old girl died in hospital. Police were called to the girl's home in Queen Bee Court in Hatfield in Hertfordshire yesterday morning.
The girl was taken to Lister Hospital in Stevenage but died. Officers are questioning the man, from Hatfield. A a post-mortem examination is due to take place on Monday. It is believed that no-one else was in the house at the time the girl was injured.
The father of an 11-year-old girl who was strangled has appeared before magistrates - charged with her murder.
Rebecca Thompson was discovered at her home in Hertfordshire last month.
Her father Simon Thompson was taken to hospital after being involved in a car crash in the early hours of the same day.
Kate Fisher was at Hatfield Magistrates Court and sent this report:
Police are trying to find out how the bodies of two horses ended up in a field close to Wild Hill near Hatfield. It's believed the bodies were dumped between Saturday January 26th and Monday January 28th.
The mare and the filly were both thin but do not appear to have been neglected. Police believe they were driven to the area in a vehicle and are working with the RSPCA to identify the owners.
Police are appealing to members of the public after an indecent exposure took place in Hatfield.
The incident occurred on Sunday 23rd September, between the times of 5pm and 5.15pm on the 301 Arriva single decker bus.
The offender moved seats next to a woman, with the aisle separating them.
The offender then proceeded to expose himself to the victim.
The offender is described as a white man in his 30s, with dark hair, thin build wearing a beige coat with toggles.
The coat had a hood which was up at the time of the offence.
A second man has been charged with the murder of 24-year-old Hatfield man Darren Leonard.
Amariloo Brami, 22, of Walnut Grove, Welwyn Garden City, has been charged with murder and conspiracy to rob.
He has been remanded in custody and is due to appear before Hatfield Magistrates’ Court on Tuesday 25th September.
Mr Leonard died after being stabbed during a disturbance inside a flat on Northfield, Hatfield on Wednesday July 11th.
Detectives investigating the murder of Darren Leonard in Hatfield have released a description of a man they would like to speak to in connection with the death.
The man is described as being of Albanian appearance, aged between 20 and 30 years old, 5ft 10in to 6ft tall and of average build.
He had short black hair, which was slightly longer on top, and a thin jaw line beard.
Mr Leonard, aged 24, died after being stabbed during a disturbance inside a flat on Northfield on Wednesday July 11th.