Police in south China's Guangdong Province have busted an underground workshop manufacturing methamphetamine, commonly known as "ice", and arrested four suspects, authorities said Monday.

Police raided the drug factory in a rented apartment in south China's boomtown of Shenzhen on June 15, confiscating more than 100 kilograms of methamphetamine, drug-making equipments, and more than 1.4 million yuan (about 209,000 dollars).

The prime suspect, nick named A Wei, had been wanted by police since 2000 for drug crimes, police said.

In China, smuggling, trafficking, transporting and manufacturing narcotic drugs can lead to capital punishment.