Liberty Hotel evacuated due to high carbon-monoxide levels

Boston Fire Department reports the cause of the carbon monoxide was "a small hole" in a boiler that let the gas escape into the hotel ventilation system. No injuries.

Local 718 tweeted around 10:15 a.m.

Fire crews still on scene at the former Charles Street jail an hour later, when Local 716 tweeted CO meters on multiple floors were showing levels of 20 parts per million (ppm), with peaks as high as 53 ppm. The lower levels are considered a potential problem for young children and people with serious breathing issues; the higher levels are considered "excessive" and anybody exposed to them should be checked by a doctor.

Among the evacuated guests, spotted by Phillip McCarthy:

[A] guy standing at the corner of Pinckney and Charles streets with two diaper-clad monkeys on his shoulders.

Channel 5 reports the monkeys are staying at the hotel while they film "The Zookeeper." No word if they're distraught over the death of their co-star, Tweet the giraffe.