Northampton County District Attorney John Morganelli says there is an arrest warrant out for 80-year-old Edgar Himel, charging him with homicide.
Himel is accused of shooting and killing his wife, 66-year-old Penny VanTassel-Himel.
Her body was found in their Palmer Township home over the weekend.
Himel is believed to be driving a dark green 2019 Nissan Rogue.
If you know anything about where he is, you are asked to call 911 immediately.