TROY, Mich. (CBS Detroit/AP) — Police say they believe a 23-year-old man fatally shot his twin brother and shot and wounded their father before apparently taking his own life in Troy.

A 64-year-old woman was also in the home on Lark Drive during the shooting Monday morning but was not harmed, police said.

READ MORE: Here Is The Top 'Should I...' Question Googled In Michigan In 2021, AT&T Reports

Troy police responded to separate 911 calls at about 12:23 a.m. saying shots had been fired in the home and a vehicle had struck a tree on Parrot Drive near Edgemont Drive. In one of the 911 calls, a 62-year-old man said his 23-year-old son shot him, according to police.

Officers found one of the twins shot to death in the basement and the other twin dead inside the vehicle from what police believe was a self-inflicted gunshot.

READ MORE: GM Secures Tax Abatement For Proposed $1.3B Orion Assembly Plant Investment

A family dog was found shot to death in the vehicle’s rear seat.

The father remains in critical but stable condition at a local hospital.

MORE NEWS: Chief White Says 'There's Reason To Believe' Remains Found In Detroit Belong to Missing Mother Latima Warren

Police believe a single handgun was used in the shooting. It was recovered in the vehicle.

© 2021 CBS Broadcasting Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.