Annette Anderson and Tyrone Walker Jr., retired fla. minister and her grandson, killed in double murder, cops say

(CBS/AP) MIAMI GARDENS, Fla. - A retired minister and her adult grandson were found fatally shot inside a South Florida home on Tuesday afternoon.

Miami Gardens police responded to the home after a neighbor noticed 70-year-old Annette Anderson had not been seen outside since Saturday. Neighbors told police it was strange for her to miss church on Sunday.

CBS Miami reports the bodies of Anderson and her 20-year-old grandson, Tyrone Walker Jr., were found bound with duct tape. Relatives believe they were killed execution-style in Anderson's home.

Anderson was a pastor at Jesus People Ministries, and her grandson had just moved to south Florida to study computer science, reports the station.

Detectives didn't immediately report a possible motive for the killing.

No arrests have been reported in connection to the case. The investigation is ongoing.