A guest lecturer was allegedly murdered by her male friend, who later set her body on fire inside a car before ending his life, near Jinkebachahalli village in Doddaballapur taluk on Saturday.

The deceased has been identified as Saroja, 40, a guest lecturer at a private college in Devanahalli. The accused, Ramanjinappa, 45, a realtor, is suspected to have died by jumping in front of a train.