It would be interesting to read up on the precedents but I think that Audu and his pals can be prosecuted under this Act –
TRAFFICKING IN PERSONS (PROHIBITION) ENFORCEMENT & ADMINISTRATION ACT 2015
Section 13 (1) All acts of human trafficking are prohibited in Nigeria
(2) Any person who recruits, transports, transfers, harbours or receives another person by means of –
threat or use of force or other forms of coercion abduction, fraud, deception, abuse of power or position of vulnerability; or
giving or receiving payments or benefits to achieve the consent of the person having control over another person, for the purpose of exploitation of that person…
commits and offence and is liable on conviction to imprisonment for a term of not less than two year sand a fine of not less than NGN250,000.00
13 (5) The consent of a victim of trafficking in persons to the intended exploitation set forth in the definition of trafficking in persons in this act shall be irrelevant where any of the means set forth in the definition has been used.
Section 15 Any person who –
(a) by use of deception,coercion, debt bondage or any other means, induces any person under the age of 18 years to go from one place to another to do any act with the intent that such person may be or knowing that it is likely that the person will be forced or seduce into illicit intercourse with another person – is liable on conviction to imprisonment for 5 years and a fine of NGN500,000
Section 16 (1) Any person that procures or recruits any other person under the age of 18 years to be subjected to prostitution or other forms of sexual exploitation with himself, any person or persons, either in Nigeria or anywhere else commits an offence and is liable on conviction to imprisonment for a term of not less that 7 years and a fine of not less than NGN1,000,000.