Legal docs -- obtained by TMZ -- detail some of the charges Tekashi has been indicted on and why prosecutors want the judge to deny him bail. Prosecutors say in April, Tekashi waited in a car outside an NYC office building and recorded while his manager and other associates robbed some of Tekashi's rivals.
The incident where shots were fired at Barclays Center is also detailed ... and describes earlier in the night, Tekashi was present while someone from his crew fired multiple shots at another vehicle. Finally, the docs describe an incident in July where Tekashi allegedly ordered a hit on a rival ... a move that left one person shot in the foot.
There's also a photo of the gun recovered at Tekashi's Brooklyn home back in September by the feds, an AR-15 style rifle.
Tekashi will be back in court Tuesday to ask a judge for bail.