Received the call at 12:45...an automated recording said that it was from the IRS and I needed to return the call immediately to avoid further action against me. The call originated from LA, California.
Got a call from 323-244-2923 - left voicemail saying it was the irs. Was tempted to call back but googled the number first and saw this chain. I'm including my case so as to help more people confirm it's a scam.