The BBC's Rachel Harvey says Gen Khattiya was quickly taken to hospital
A renegade Thai general who backs anti-government protesters has been shot, shortly after a deadline for troops to seal their Bangkok protest camp passed.
Khattiya Sawasdipol, better known as Seh Daeng (Commander Red), was shot in the head and seriously injured.
In clashes later, a protester was shot dead. The army has moved to seal off the protesters' large camp.
A state of emergency in place in the capital and surrounding areas is to be extended to 15 other provinces.
The BBC's Rachel Harvey in Bangkok says all talk of reconciliation and election timetables has been abandoned and the Thai capital is braced for further bloodshed.
The US has closed its embassy in Bangkok saying it is "very concerned" - and the UK also said it was closing its embassy on Friday because of the situation.
People were earlier urged to leave the area near the protesters' sprawling camp, and shops and businesses were advised to close before the 1800 (1100 GMT) deadline passed. Public transport was suspended in the area.
Describes himself as a key military adviser to the red-shirts
Suspended from duty in the Thai army where he has the rank of major-general
Dubbed Seh Daeng (English: Commander Red), enjoys a cult following among the opposition's radical wing
Aged 58, has likened himself to the Mel Gibson character in the film Braveheart
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.