The investigation into the acid attack on Shahzad Akbar, the former head of Pakistan’s Assets Recovery Unit, has been closed by the United Kingdom police as no suspects were found in the probe, The News reported.

The probe, which lasted for approximately six months, concluded without finding any leads.

The Hertfordshire Constabulary, responsible for policing the area where Akbar resides, stated that it was an intricate investigation and that all possible lines of enquiry had been exhausted.

They reassured the public that incidents of this nature were rare in the region and that the safety of victims remains their top priority.

The police also mentioned that they would take appropriate action if new information emerges in the future.

While quoting an intelligence source, the report added that several lines of inquiry were probed, footage of several hours reviewed including the entry and exit points of the local area in Royston.

The forensics didn’t create any headways and no clues were found, said the source, therefore it was decided to close the investigation without any further action.

In November last year, the Herts police said they were contacted by the ambulance service just before 4.45pm on November 26 to reports of an assault in Royston.

“It is believed an acidic solution was used. A 44-year-old man received hospital treatment and has now been discharged. Safety of any victim is paramount and we believe this is an isolated incident,” the police had said.

In his letter to the law enforcement authorities in the UK two weeks before the attack, Akbar had expressed his concerns over his safety.

“The letter two weeks ago came to my new address which was shocking for me because it was a clear message from the Pakistan government that my location is known. So the police already knew about this matter,” it said.

Reports said he wrote the letter after receiving a letter from the Cabinet Division asking questions about his purported role in the £190 million case and Imran Khan and Bushra Bibi’s Al-Qadir Trust case.

A source linked with the Pakistani government with full knowledge of the ongoing cases had said Akbar holds evidence and documents in the £190 million corruption case and he took away these state-owned papers and refused to cooperate with the inquiry.

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Last week, Akbar announced he was taking legal action against the Government of Pakistan over the acid attack. He also served a copy of his legal action to the Pakistan High Commission in London.

“I have already made it public who is responsible for the attack on me, perpetrated at the best of Pakistani government. The criminal inquiry may be closed but I have recourse to civil course of action which I have already started,” he said when asked to comment on the closure of the inquiry.