The 31-year-old Brown, known as Scary Spice when she was in the megahit group of the '90s, gave birth to the child April 3 in Santa Monica, California.
Brown's publicist, Nadine Bibi, did not immediately respond Friday to an e-mail from The Associated Press asking for details.
Arnold Robinson, a spokesman for Murphy, declined comment.
Brown has said ex-boyfriend Murphy is the father. The 46-year-old "Dreamgirls" star has said he is not sure, while Brown has said there is "absolutely no question that Eddie is the father."
Brown has an 8-year-old daughter, Phoenix Chi, from her marriage to Jimmy Gulzar.
Murphy has five children from his marriage to Nicole Mitchell Murphy.
Putin's official spokesman Dmitry Peskov commented on remarks in the US media about failures in launching nuclear-capable missiles in Russia
The Buk system that shot down MH17 belonged to the 53rd SAM missile brigade of the Russian Ministry of Defense, investigators say after looking at a few pictures on the net
It has long been understood that the West has been trying to subject Russian borders to total control. We have not seen such activity even during the Cold War