A couple was strangulated on Friday when the girl's family found them together here.
Mayank and Rachna were killed by Rachna's family at their house as they were caught in an objectionable position, police said.
The girl's father and brother have been arrested while efforts are on to nab other absconding accused, police said.
In the second incident, a 22-year-old man was killed yesterday over an alleged love affair with a girl.
Mursaleem was stabbed to death by five members of the girl's family.