A man was arrested after he was spotted walking around a Bronx neighborhood in broad daylight with what appeared to be a long gun — less than 24 hours after a mass shooter killed an NYPD officer and three others at a luxury Park Avenue office tower.
Illegal immigrant caught working as police officer in Maine while attempting to buy firearm
The Highbridge neighborhood was on lockdown after police responded to the panicked scene around 12:30 p.m. to canvas the area, according to an NYPD rep…