A Man arrested on suspicion of murder in Rainham.
Officers and the South East Coast Ambulance Service attended the scene where a woman in her 50s was declared deceased.
A man in his 20s was arrested on suspicion of murder shortly after in Rainham High Street and currently remains in custody.
Both parties are known to each other.
An investigation to establish the circumstances of the incident has been launched by the Kent and Essex Serious Crime Directorate and officers currently remain at the scene while enquiries are ongoing.