Update: Father Of Ayla Reynolds Seen By Police Grabbing And Pushing Ex-Girlfriend 

PORTLAND, Maine (AP) – Justin DiPietro, the father of missing toddler Ayla Reynolds, is facing a charge of domestic violence assault.According to Portland Police, DiPietro was arrested shortly after midnight July 6.Police said he was taken into custody a police lieutenant passing by witnessed him assaulting a woman.Police say DiPietro and the woman were arguing when he grabbed and pushed her.The woman is an ex-girlfriend of DiPietro and she was not injured in the assault, police said.DiPietro was charged with domestic violence assault and was released on bail.DiPietro’s 20-month-old daughter, Ayla Reynolds, hasn’t been seen since she was reported missing Dec. 17, 2011, from DiPietro’s mother’s home in Waterville, where DiPietro lived at the time. State police have called the case the biggest criminal investigation in Maine history. DiPietro could not be reached for comment. His previous cellphone number is no longer in service, and a new number in his name could not be located.