Ms Osokogu, a post graduate student of the Nasarrawa State University, was allegedly killed after she was drugged and raped at an hotel in Lagos on the 22nd of July, 2012.
The police had initially arrested and charged four men in connection with the crime before subsequently charging another three.
At the resumed hearing of the matter before a Yaba Magistrate Court sitting in Ebute Metta, Lagos, police prosecutor, Chukwu Agwu withdrew the three different charge sheets filed against all the suspects and substituted them with a consolidated eleven count charge against all seven defendants.
In the consolidated charge, Okwuomo Nwabufo, Ezike Olisaeloka, Orji Osita, Maduakor Chukwunonso and Gideon Okechukwu the taxi driver and some other unknown persons said to be at large were named in eight of the charges as having conspired to murder the late Cynthia Osokogu by administering her with an obnoxious substance known as Rophynol Flunitrazepam tablets via a Ribena fruit juice.
They were also charged with binding her hands, torture, rape and theft of her valuable property.
A new charge, that of inviting the late Cynthia Osokogu through a phone call, was also brought against the first two defendants.
The last two defendants, Ezike Ifechukwu and Ezeaka Chinonso were named in the last two counts as having conspired to rob and receive the stolen property of Cynthia Osokogu.
Magistrate Olalekan has ordered that all seven defendants be remanded in prison custody pending the advice of the Director of Public Prosecution (DPP).
The Magistrate also asked the prosecution to expedite action with regards to obtaining the advice before adjourning till the 5th of November.