RE: Yeah, from the BSL-4 lab just down the street!
There are actually two labs suspected. One is the BSL-4 Wuhan Virology lab. But that is 20 miles away from the Huanan Seafood market.
The most likely one is the Wuhan CDC which is just a few hundred meters away from the SeaFood market.
A Scientific study has been written by two scientists commissioned by Beijing from South China University of Technology that concluded this.
SEE HERE:
Here is the PDF for the study:
TITLE: THE POSSIBLE ORIGIN OF THE 2019-nCov CORONAVIRUS
by BoTao Xiao and Lei Xiao
ABSTRACT:
The 2019-nCoV has caused an epidemic of 28,060 laboratory-confirmed infections in human including 564 deaths in China by February 6, 2020. Two descriptions of the virus published on Nature this week indicated that the genome sequences from patients were almost identical to the Bat CoV ZC45 coronavirus. It was critical to study where the pathogen came from and how it passed onto human. An article published on The Lancet reported that 27 of 41 infected patients were found to have contact with the Huanan Seafood Market in Wuhan.
We noted two laboratories conducting research on bat coronavirus in Wuhan, one of which was only 280 meters from the seafood market. We briefly examined the histories of the laboratories and proposed that the coronavirus probably originated from a laboratory. Our proposal provided an alternative origin of the coronavirus in addition to natural recombination and intermediate host.