The injured included eight soldiers and five journalists. In the day's first attack, a bomb went off on a road in Ra-ngae district in Narathiwat province, injuring six soldiers who were on foot patrol, said police Col. Jiradet Phrasawang. Three of the soldiers were in serious condition.
The second bomb exploded an hour later about 100 meters (328 feet) from the first blast as a bomb squad and journalists were arriving at the scene, Jiradet said.
Two Explosive Ordnance Disposal officers were hurt in the second blast, and five journalists, a Thai photographer for the French news agency Agence France-Presse and two reporters from Thai television stations, were slightly wounded, Jiradet said.
Jiradet said Islamic insurgents were suspected of carrying out the bombings.
Later in the day in the same province, suspected insurgents staged drive-by shootings, killing four villagers riding on motorcycles, said Jiradet and other police officials.
Another attack occurred in Pattani province, where suspected insurgents on motorcycles fatally shot a 35-year-old farmer on a roadside in Panarae district, said police Col. Manit Yimsaai.