Man arrested over Sydney woman's death

Dannielle Finlay-Jones was found with serious injuries at a Cranebrook home on Sunday afternoon and could not be revived.

Police had earlier said they believed Ms Finlay-Jones and the suspect were known to one another, adding there were no signs of forced entry and they did not believe it was a case of arbitrary violence.

Ms Finlay-Jones worked as a teacher and a student learning support officer for the NSW Department of Education, according to her Facebook page.

Her family has requested privacy.

Police said on Wednesday morning that the man is expected to undergo assessment before being taken to Katoomba Police Station where he will be charged with murder.