Police Officer Jason Lai

Police Officer Jason Lai

Racist and homophobic text messages were allegedly sent by a San Francisco police officer at the center of an ongoing scandal -- the most recent disturbing revelation for the beleaguered department.

CNN has exclusively obtained a list of dozens of offensive texts sent by Officer Jason Lai.

It marks the second time in as many years that the SFPD has been the subject of a racist texting scandal and could undermine Chief Greg Suhr's assertion that the problem is limited to a relative handful of officers and not part of a broader cultural problem within the ranks, as critics contend. Ref. CNN.