Authorities are investigating a boiler explosion at an unregistered garment factory that killed two and injured four others in the capital’s Meanchey district on Saturday, the second fatal boiler incident in a garment factory in the capital in less than three weeks.

Neth Mony Ponnaka, the director of the Phnom Penh Department of Industry and Handicraft said yesterday said that a specialised team will inspect the Chan Seng Heng garment factory – which opened on April 1 and was not yet registered with the department.

“They made a mistake, and my department was not aware of it,” he said, adding: “We will talk with the owner. The [department] did not get the licence from the company, which violates the law on management of handicrafts, Article 23. This owner could be fined.”

Calls to the factory – which police said employs 20 people – went unanswered yesterday. According to Mony Ponnaka, the boilers were “very old and second hand”.

Stung Meanchey commune deputy police chief Em Thea said the explosion occurred during the lunch break on Saturday, killing security guard Seurth Phal, 27 and cleaner Kong Phanny, 61.

“There would have been more injured if the workers were in the factory because the explosion was very bad,” Thea said.

A visit to the factory yesterday revealed that one of two wood-fired boilers exploded, blowing through walls and roofing, scattering debris across the factory floor and onto the street. Large metal components of the boiler landed as far as 50 metres from where the explosion occurred.

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Worker Sam Heurn, 35, was having lunch about 100 metres from the factory at the time. “It was like a big bomb explosion,” he said, adding that he then ran to the scene and saw Kong Phanny bleeding out.

“She told me to call to her son to come here and bring her to the hospital. I was very scared and shocked,” he said.

Reached yesterday, Phanny’s son Khoun Sambo, 30, said that his mother had died at the Khmer-Soviet Friendship Hospital. He intends to file a police complaint seeking $40,000 in compensation.

Meanwhile, authorities are searching for a boiler technician who was not present during the accident.

Hur Meng Varng, deputy chief of the Meanchey district police’s penal crime office, said a shareholder of the factory had been detained for questioning.

“The man we questioned said there is not anyone in charge of operating the boiler yet,” he said. Meng Varng said the man was released after identifying a suspect “Oum”, 35, who had been hired to install the boiler and had come to the factory on Friday to conduct repairs after fractures had been observed on the machine.

The factory is not listed with the Garment Manufacturers Association in Cambodia and is likely a subcontractor, a sector of the industry that represents a significant regulatory gap according to the Solidarity Centre’s William Conklin.

“All the major players – [government], brands and GMAC factories (who they are sub-contracting for, since they would have export licenses) all bear some responsibility in regulating and monitoring these factories and ensuring at a minimum there is compliance with laws,” he said.

The latest explosion followed a boiler blast at a factory owned by Zhen Tai which makes clothes for Levi Strauss and Dutch retailer C&A. One person was killed and seven injured at that plant, which is listed with GMAC and the oversight programme of the International Labour Organisation.