Police are stepping up patrols after burglars removed smoke alarms from a house and then set it on fire.
Thieves smashed through a door in Lionel Close, Wendover, stole jewellery and then used cleaning products around the house.
After removing smoke alarms they then started a number of small fires throughout the property.
The victim returned home to find the house filled with smoke and called 999.
The break-in happened sometime between 8am and 7pm yesterday (Tuesday).
It is being linked to an attempted burglary in the same road sometime between 3.30pm yesterday and 9.15am today (Wednesday), although thieves were unable to get in.
DI Joe Banfield, of Aylesbury CID said: “Incidents like this are extremely rare, but are understandably very concerning for the local community.
“Fortunately no one was injured in this incident, but I would like to reassure residents that we take this type of crime very seriously and officers are doing everything they can to find those responsible.
“If anyone has any information that they think could help with our enquiries please contact us via the 101 number.
“There will be extra patrols in the area today whilst officers conduct enquiries and I would again urge anyone who has any concerns to approach these officers or call 101.”