Porcupine Up a Lamppost?

One woman got a spiky hairdo she never wanted! A Brazilian housewife was out walking her dog recently when a porcupine fell on her head! Sandra Nabucco was left with 200 sharp quills in her scalp, which had to be removed by a surgeon with tweezers. The 52-year-old said, "it was a huge shock. I felt a thud on my head and then felt spines with my hands. The pain was enormous." The prickly animal was believed to have fallen from a lamppost.

I was thinking why was the porcupine on a lamppost?  According to wikipedia.com, North American (and I guess South American) porcupines often climb trees to find food.  I wonder what kind of food that porcupine was looking for on a lamppost?