The wrongful death case – which is separate to that trial – was filed on Tuesday by Tupac’s brother Maurice Shakur, acting as the administrator of the estate for his late father (and Tupac’s stepfather), Mutulu Shakur.
“Nearly 30 years after Tupac’s death, in 2023, the first – and only – arrest was made,” the documents state.
“Related grand jury transcripts and a subsequent Netflix documentary have since revealed the existence of a broader, more complex conspiracy to murder Tupac that involved much more than mere retaliation for a prior altercation.”
The documents express hope that new evidence will finally allow the family to identify and name the “individuals who may have participated in planning, financing, directing, or carrying out the conspiracy” to murder Tupac.
These new sources of information include grand jury transcripts from Davis’ criminal proceedings and interviews from the Netflix documentary Sean Combs: The Reckoning, according to the complaint.
The documentary, released last November, included tapes of a police interview in which Mr Davis claims that Combs offered him $1m (£769,000) to murder Shakur.
Combs has repeatedly denied involvement in the rapper’s shooting; and called the Netflix documentary “a shameful hit piece”.
The BBC has contacted Combs’ lawyers and Mr Davis’s representatives for a response to the new lawsuit.