10:00 AM PT -- A rep for the NYPD tells us ... cops have spoken with both the photog and Alec who each admit pushing and shoving each other.
We're told both parties ultimately decided to walk away from the situation without pursuing charges.
So ... case closed.
Alec Baldwin has struck again ... allegedly ... grabbing a photog on the streets of New York in front of several witnesses ... and now the NYPD is involved.
Sources connected with Baldwin tell TMZ ... the photog was the aggressor.
We spoke to the photog -- not a TMZ guy -- who tells us he did nothing to provoke Alec saying, "All I can say is I was doing my job asking him normal questions and he flipped. That's all."
The photog says he called police ... and cops responded to the scene.
A friend of Alec tells us ... Alec was with his wife Hilaria during the incident ... and Hilaria, in an effort to avoid the pap, ducked into a nearby tea store. We're told Alec also called police.
The friend tells us, "What kind of sick twisted psychopath chases a woman who just got out of the hospital from having a baby into a tea store?"
Hilaria just gave birth to the couple's daughter on August 23.
Story developing ...