BANGKOK (AP) — Thai security officials say another anti-government protest site in the Thai capital has been attacked following a weekend of violence that left four people dead, including three children.

Deputy National Police spokesman Anucha Romyanan said shooting occurred early Tuesday at a protest camp near Lumpini Park in downtown Bangkok. He said shots were fired from a car and a motorcycle at protest site guards there and at another protest site near the upscale Ratchaprasong shopping area.

Anucha said one man was injured in the leg. He did not say if the guards, some of whom are armed, returned fire. At least 20 people have been killed and more than 700 have been hurt since November in violence related to protests demanding that Prime Minister Yingluck Shinawatra resign.