Police officers looking for a missing person in Sheffield found 20 cannabis plants growing in a house.
They discovered the plants in a property in Watch Street, Woodhouse, over the weekend.
A South Yorkshire Police spokesman said: "Whilst enquiries were being conducted into a missing person, a 20-plant cannabis set-up was found at an address on Watch Street.
"Evidence has been recovered and enquiries are ongoing.
"The missing person returned of their own accord safe and well."