Forensic teams searched a house in Branston near Lincoln after a double murder in the village.
On Monday afternoon a 22-year-old man was arrested on suspicion of murder.
A man and woman were found dead by police at the bungalow on Lincoln Road, reported shortly after 11am on August 5.
The entrance to the property remains cordoned off and police vehicles still guarded the scene on Tuesday morning.
Overnight forensic teams have been seen entering the property to investigate the murder case on Monday evening.
Lincolnshire Police officers also carried out door to door enquiries throughout the day.
A red Dacia Logan MCV, believed to belong to the occupiers, can be seen parked outside the house.
What appears to be a pram with a rain shield can also be seen outside the bungalow.
Lincolnshire Police have yet to name the victims or the man they arrested.
As of Tuesday morning, the man has not been charged and remains in custody, with an update is expected later in the day.
Meanwhile, investigating officers are asking anyone who may have seen anything suspicious to call 101, quoting incident 135 of August 5.
People in the quiet village said they were shocked to hear about a double murder.