They were kidnapped more than three weeks ago by armed Islamist militants from their boarding school in the north-eastern state of Borno.
Another eight girls were taken on Sunday from a village near the militants’ hideout in a nearby forest.
The Force urges all patriotic citizens with such useful information to contact the following numbers:
09-2914649 08081777309 08055547536 08032125050 08034617591 08035969731
While calling on the general public to be part of the solution to the present security challenge, the Police High Command also reassures all citizens that any information given would be treated anonymously and with utmost confidentiality.
Earlier this week, the Boko Haram group admitted that its fighters had abducted the girls in the middle of the night from their school in the town of Chibok on 14 April.
The group, whose name means “Western education is forbidden” in the local Hausa language, has staged a wave of attacks in northern Nigeria in recent years, with an estimated 1,500 killed in the violence and subsequent security crackdown this year alone.