The couple had appeared on "Satyamev Jayate", Aamir Khan's famous television show on social issues.
Mahvish told police that the panchayat had ordered their killing two years back, after they tied the knot. She said she believed that the panchayat had connived with her family to kill her husband.
The couple had recently returned to the village after the senior superintendent of police (SSP) Bulandshahr had assured them police protection.