Vienna - A 48-year-old Austrian man allegedly has murdered his wife's parents with a home-made flame-thrower, Austrian news agency APA reported Saturday.
The attack occurred Friday evening.
The suspect's 84-year-old mother-in-law burned to death in her bed after she was torched with a modified propane-gas bottle. As she had lost both legs due to diabetes, she had no way of escaping.
Her 84-year-old husband was found dead outside the house the elderly couple shared with their daughter and son-in-law in Lemberg in Styria province.
Police said an antagonistic relationship between the two couples living under one roof could have led to the murder.