The affidavit states that the incident occurred at the Adams Avenue residence of McNeill's girlfriend, who is also Seward's cousin, just after 7 a.m. on May 9.
According to the affidavit, the woman told authorities that she had been dating McNeill for roughly six months and that she had argued with him the night before the stabbing over text messages she discovered on his phone.
Seward, who occasionally slept at her house, showed up the next morning after 5:30 a.m. when the girlfriend walked outside to smoke. The affidavit states that after McNeill made a remark to the girlfriend as they entered the house, Seward confronted McNeill.
The woman informed officers that she was able to briefly separate McNeill and Seward after they got into a physical altercation. She informed officials that the altercation resumed and went on until a neighbor dialed 911 at approximately 5:50 a.m.