Child Killer Karolina Zurawska, 41, from Gendros, Swansea, will appear before the city’s magistrates court on Monday in connection with the death of Alexander Zurawski.
Alexander was found dead at a property in Cwm Du Close, Gendros, on Thursday.
Karolina Zurawska has also been charged with attempted murder in connection with an incident involving a 67-year-old man earlier on the same date.
Alexander Zurawski was always helpful. Always eager to assist with cooking and cleaning
South Wales Police said detectives were not looking for anyone else in connection with the incident.
Chief Superintendent Chris Truscott, divisional commander for Swansea and Neath Port Talbot, said: “This is a distressing incident which has been a tremendous shock to the local community.
“The local community has been outstanding in supporting our investigation, and we would like to thank all of them for their patience during a traumatic few days.
“A police presence will be retained in the local area over the coming days to provide advice and reassurance.
“Our thoughts are with Alexander Zurawski’s family and friends at this difficult time.”
Alexander Zurawski’s family described him as a “very kind child” in a statement issued by police.
“He loved playing with his little sister and his dog Daisy,” they said.
“Alexander was always well-behaved and never naughty. He was very clever and very mature for his age. He had a great understanding of facts.
“Alexander was always helpful. Always eager to assist with cooking and cleaning.
Alexander was a delightful, determined little boy whose tenacity and positive demeanour ensured his success in all he undertook.
“Alexander spoke both English and Polish and often corrected his parents with their English if they got words wrong.
“He was amazing.”
The family also thanked the emergency services involved in the incident on Thursday.
Bethan Peterson, headteacher of Whitestone Primary School, said: “We’re devastated to learn of the tragic death of Alexander.
“Alexander was a delightful, determined little boy whose tenacity and positive demeanour ensured his success in all he undertook.
“He was an extremely loved and popular boy amongst his peers, staff and with all who knew him. He will be sadly missed.
“Appropriate support will be made available to children, staff and all those within our school community who are affected.
“We would ask that our school community’s privacy be respected at this difficult time.”
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