Deputy Commissioner of Police (New Delhi) Jatin Narwal said they have received a complaint in this regard and a probe has been initiated. However, no case has been registered so far.
Party sources claimed three threat calls were made at the party head office between 10:30 pm and 1 am on Sunday night.
“The callers were abusing the party general secretary over his support to the JNU issue. They said ‘whatever he (an alleged reference to Yechury) is doing is not right and we will see him’ if he continued to support the protesting students.
“They (the callers) said they belonged to some organisation Aam Aadmi Balvir Sena. We suspect it is the same organisation which had attacked our head office yesterday,” the source said.
Police suspect that the calls were made by the same person.
The source added that the party traced the numbers from which the calls were made and lodged a complaint to this regard with Mandir Marg Police Station.
Meanwhile, police registered an FIR in connection with Sunday’s attack on the CPI-M head office, following which three youth were arrested.
On Sunday, a group of youths had allegedly tried to vandalise the party office.
The party men had handed over one of them, identified as Sushant Khosla, to the local police, while two others, Ved Prakash and Rocky, had surrendered later.
The youth had told the police they belonged to ‘Aam Aadmi Sena’, while the party alleged that the men belonged to Rashtriya Swayamsevak Sangh.
Earlier on February 13, the CPI had claimed that party national secretary D Raja received threat calls over support to JNU students demanding release of Kumar.
Image: CPI-M's Sitaram Yechury and CPI's D Raja after meeting Home Minister Rajnath Singh on Saturday over the JNU row. Photograph: PTI
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