The family of a pregnant woman doused by acid fear they could be targeted again after the parents of their alleged attackers were released from custody.

Luy Sovannaroth, whose wife and 2-year-old daughter were injured in the attack last month, said he was concerned for his family’s safety after Nhe Deng, 56, and his wife Seng Kim Leng, 55, were let go by police in Takeo province’s Kiri Vong district.

Deng and Leng were held overnight last Wednesday in connection to the attack at Tun-lob market, allegedly carried out by their children – Beng Meas, 28, and, Beng Leakhena, 22 – who have reportedly fled to Vietnam.

Tin Sochetra, provincial deputy prosecutor at the Takeo provincial court, said Deng and Leng had been questioned and released, but the investigation was ongoing. According to police, Meas attacked Sovannaroth before Leakhena threw acid at his wife, Moung Srey Mom, 31, who was feeding their 2-year-old daughter.