Kolkata: A TMC office, the residences of a former MLA and councillor, and a CPI(M)-built martyrs' memorial were allegedly vandalised in south Kolkata's Jadavpur, with the Trinamool Congress and the Left separately accusing BJP workers of involvement, a charge denied by the saffron party.

Former Jadavpur MLA Debabrata Majumdar on Sunday alleged that his residence at Bijoygarh was attacked by a group of 100-150 people whom he described as "outsiders" who joined the BJP recently.

He claimed that the group, allegedly carrying arms, moved through several areas on motorcycles on Saturday night and vandalised TMC party offices and other places before reaching his residence, where they allegedly pelted stones and broke window panes.

Former TMC councillor of ward 96 Basundhara Goswami alleged that her house was also ransacked by members of a motorcycle-borne group. She claimed that the group was armed and carried BJP flags. "The BJP is trying to terrorise opposition parties, but they cannot keep us indoors," she said.

A TMC office at Bagha Jatin was allegedly ransacked, with party flags found lying on the ground and a memorial dedicated to party workers damaged.

In Anandapalli, a TMC party flag was allegedly torn, and a CPI(M) memorial dedicated to martyrs of the 1960s was vandalised, the party alleged.

BJP state president Samik Bhattacharya rejected any connection between his party and the incidents, alleging that the violence was the result of an internal dispute within the TMC.