Toronto police say the deaths of Apotex founder Barry Sherman and his wife Honey were a "double homicide.''
Det. Sgt. Susan Gomes of the homicide squad says the couple was targeted.
The Shermans, in their 70s, were found dead in their north-end Toronto home in mid-December.
Gomes says there were no signs of forced entry into the residence.
Police have spent the past six weeks scouring the home, but returned it to the family this morning.