Mr Modi's party is in power in 21 of India’s 29 states, but not in West Bengal - one of the few states it has never ruled.The Prime Minister's ruling of nearly three quarters of the country’s states has been driven by his popularity as well as religious polarisation in some places.
According to state BJP chief Dilip Ghosh, police had named at least six senior BJP members for causing disharmony between communities and illegally possessing weapons, but the has party denied any wrongdoing.
West Bengal Chief Minister Mamata Banerjee, who also heads the Trinamool Congress, has ordered strict police action action against all troublemakers.
Why is the court saying that 'you must study here, and you must live in a hostel'? Hadiya's battle has posed a challenge to the patriarchy in India, say activists.
Men and women are still murdered across the villages of northern India for marrying outside their caste and religion.
The term "Love Jihad" was popularised by the Rashtriya Swayamsevak Sangh (RSS) and its affiliate groups such as Bajrang Dal and Vishva Hindu Parishad.
"Girls of the coming generation should be told the meaning of 'Love Jihad' and the ways to save themselves from their traps," RSS chief Mohan Bhagwat said in 2014.
Anuj Sharma, a police official in the state, told Reuters that security had been increased following a meeting with officials earlier today, with riot police deployed and around 100 people detained to snuff out the violence.
Tension between Muslims and Hindus has escalated in large parts of India since the country’s prime minister and his Hindu-nationalist BJP came into power in 2014.
Cases of illegal abortions of female foetuses and immolation of young brides by their in-laws for not fulfilling dowry demands are also rampant.
Activist Krishnan says "Love Jihad" is a right-wing concept which has "zero respect for women's choice and consent".