A man witnesses identified as the shooter who killed three people and wounded six in a township of Raoping county, Chaozhou, Guangdong province, was detained on Sunday in Dongguan, according to a police officer at the Chaozhou public security bureau.

Two guns and 29 rounds of ammunition were seized by the police.

The alleged killer, Lin Zhonghong, 40, escaped to Dongguan, a Pearl River Delta city, also in Guangdong, after he shot nine people in Jingzhou township on Tuesday, the police officer said.

Police in Raoping county, which governs Jingzhou, doubled their reward on Saturday to 200,000 yuan ($30,300) for information leading to Lin's capture. Witnesses said Lin was the man who opened fire in the township at 7:53 pm on Tuesday.

In a statement released by the Raoping county bureau of public security, local residents and witnesses were asked to provide information on Lin's whereabouts, as he was considered dangerous.

Police officers were sent to the scene after reports of gunfire on Tuesday. According to a witness, the first two victims were brothers, aged 47 and 49. Both were shot in the head.

The shootings reportedly took place after Lin failed to reach agreement with the victims about opening secret casinos. The men had quarreled the previous night.

After shooting the brothers and fleeing, Lin opened fire on people chasing him, wounding seven of them. A 20-year-old man who was severely wounded died in the hospital.

One of the wounded was a 13-year-old boy, Lin Xuanhong. All were males and residents of Jingzhou. The oldest person wounded was Lin Yuxi, 55.