All seven victims were wearing orange paper wrist bands and police are trying to locate the venue that was distributing them.
The star wide receiver was cut by the New England Patriots last week amid sexual assault allegations.
No suspects were in custody.
The resort where the couple were staying confirmed to NBC News that a male guest drowned while freediving alone outside the underwater room on Thursday.
Amber Guyger and Botham Jean were neighbors. His fatal shooting last year ignited conversations about racial bias, police use of force and being safe in one's own home.