Kolkata, Feb 6 (IANS): West Bengal Chief Minister Mamata Banerjee on Wednesday accused the Central government of "sending notices" to all the opposition party leaders and people connected to them, even in petty cases, ahead of the 2019 Lok Sabha elections.

"All the opposition parties are united. They (the Centre) are doing it deliberately, now, at the time of elections. There is no serious case, nothing. Not even a case of cheating," Banerjee said when asked about interrogation of Congress President Rahul Gandhi's brother-in-law Robert Vadra by the Enforcement Directorate.

"They sent a notice casually to everybody. This is a larger conspiracy. We stand together. We will complain to the Election Commission against such a trend," she said at the state secretariat.

Vadra, on Wednesday, appeared before the ED four days after a Delhi court ordered him to join the investigation relating to the ownership of 1.9 million pounds of undisclosed assets abroad, allegedly belonging to him. He was accompanied by his wife and Congress general secretary for Uttar Pradesh East, Priyanka Gandhi Vadra.

Banerjee also said she would be in Delhi next Wednesday and Thursday, where the Opposition parties would take a decision on their future course of action.