The Maharashtra Anti-Terrorism Squad (ATS) on Wednesday said that Zakir Hussain Shaikh, who was arrested last month in a case of “criminal conspiracy to commit terrorist acts”, had received calls from Pakistan.

“During the investigation, terror suspect Zakir Shaikh’s Voice Over Internet Protocol (VoIP) calls revealed that he received calls from Pakistan. It can’t be confirmed that numbers were from Pakistan but IP address was of Pakistan,” said Maharashtra ATS chief Vineet Agarwal.

Zakir, booked under the Unlawful Activities (Prevention) Act, was arrested by Maharashtra ATS from suburban Jogeshwari in Mumbai during an operation on September 17 in connection with the Pakistan-supported terror module busted by Delhi Police in September.

He along with two other terror suspects Rizwan Monim and Irfan Shaikh has been under Maharashtra ATS custody till October 11.

The ATS had earlier said that Zakir revealed that he had been receiving instructions from his handlers based in a foreign country.

It told a special court in Mumbai that Zakir was in touch with one Anthony alias Anwar alias Anas from “neighbouring country”. It had also told the court that he was hatching a criminal conspiracy to carry out terror attacks using explosives in Maharashtra and elsewhere.

Last month, the Delhi Police’s Special Cell had busted a “terror module” and arrested six men, including two terrorists trained by Pakistan’s intelligence agency ISI. The module was allegedly planning to carry out terror attacks across the country.

Zakir was in touch with one of the six suspects — Jan Mohammad Shaikh — a resident of Dharavi in Mumbai.