Like the earlier two incidents, this shooting involved a black victim.
The incident was the latest in a series of shootings involving police officers.
The 28-building, 2,891-unit complex was the site one day in August of two shootings involving drug gangs.
The transit police said they had not determined whether the shooting involved a robbery or a dispute.
Any shootings involving police officers are routinely reviewed, she said.
Detectives said yesterday that it was not clear whether the shooting involved a robbery or a dispute.
The shootings, he said, mostly involve young men arguing among themselves over drugs and guns.
The targets' close range is based on the fact that most shootings involving officers occur within seven yards or less.
The prosecution said that they would make the case for 16 shootings allegedly involving Muhammad.
There were reports that the shooting may have involved gang members, but the police played down that aspect.