A Nigerian based in Germany, Ahmed Ibrahim, was allegedly brutalised by officials of the Nigerian Immigration Service at the international wing of the Murtala Muhammed Airport, Lagos, on the allegation that his name was among those on the wanted list of the Presidency.
He was returning to Munich, Germany, when the incident happened.
The Kwara State-born 32-year-old Ibrahim claimed three officers of the immigration service descended on him, with one of them hitting him on his head, which is currently bandaged, while pictures taken and obtained by some journalists showed his blood-soaked cloth.
According to him, while he arrived at the terminal to undergo departure formalities, he was accosted by immigration officers who later seized his passport, a development that made him to miss his flight.
According to Ahmed, the officials said he would need clearance from the Presidency before he would be able to leave the country.
Ahmed was later taken to Abuja on Tuesday, only to be detained in the evening.
His elder brother, Adam Abdullahi, told reporters that all efforts to secure his release based on innocence failed, as one of the officers insisted on transferring the suspect to the headquarters at Abuja.
But an immigration source, who confided in some journalists, said the issue was a case of mistaken identity.
The source said the name of the affected passenger actually tallied with the name of a wanted terrorist which made the immigration officials at the airport to interrogate and quiz Ibrahim.
He, however, denied that they were responsible for the injury he sustained, saying he was the one that actually injured himself while refusing to cooperate.