Fortunately, a passing motorist spotted the tot, picked him up and dialed 911, Boston Police report.

And what was he doing wandering around by himself then?

Around 4:15am, officers responded to Kempton St. for a report of a missing three-year-old child. There, officers spoke to a mother who reported that she had left her three year old at home with her 18 year old daughter around 11pm and came home around 3am to find her front door open and her three year old missing from his bed. The caller stated that she looked around for her son unsuccessfully and then called the police.

Detectives and DSS are now on the case.

Meanwhile, police report that carousers who party together stay together. Around 2:20 a.m., police told a group of people causing a disturbance at 157 Brighton Ave. in Allston to move along. Apparently, they moved along to the South End, where, around 4:30 a.m., police responded to a report of a fight at 661 Tremont St. They say they found the same group of people:

Officers gave the group numerous orders to disperse, all of which were met with negative results. Officers continued to monitor the group which continued to move along but maintained their disorderly conduct. One particular individual was being louder and causing a scene. This individual was yelling and being confrontational with officers despite their orders for her to be on her way.

And that's how a lass from Lynn got pulled in.