Officials said immigration authorities first alerted Enforcement Directorate sleuths after they intercepted Qureshi, who reached the airport here early morning to reportedly travel to Dubai.
The action was taken based on a ED look out circular against him. Subsequently a team of ED officials arrived and took his custody, they said.
According to airport officials, Qureshi told authorities that he has furnished a bond and got the courts' nod to travel abroad even as he got a fax sent in this regard from his legal team to the airport.
ED is questioning him at present at its office here.
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The agency had registered a money laundering case against Qureshi under the Prevention of Money Laundering Act (PMLA) last year. He is under the scanner of probe agencies for alleged tax evasion and hawala-like dealings.
The agency had slapped the fresh charges under PMLA after taking cognisance of the I-T department's charge sheet (also called prosecution complaint) against Qureshi in their alleged tax evasion case in a local court last year.
The ED had alleged that Qureshi has sent "huge amount of funds" through the hawala route to Dubai, London and few other overseas destinations in Europe.
The agency early last year had also conducted searches on Qureshi's premises and had also questioned him.
The Income Tax department, during its probe, had found Qureshi had 11 bank lockers which were in the names of his employees and associates but the articles belonged to the businessman.
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