At least three people were injured in a grenade attack on Street 163 in Phnom Penh’s Boeung Keng Kang III commune at about 7:40pm yesterday evening, police said.

The victims did not appear to be the intended targets of the grenade, which was tossed under a white Lexus as it drove down the street by assailants following from behind on a motorbike, an eyewitness said. The car was damaged, but the driver did not appear to be injured.

Police said that teacher and Indian national Dhamendra Singh Kshetrimayum, 35, who lives in the district, was injured around her waist and admitted to the Khmer-Soviet Friendship Hospital for treatment.

The second victim, Cambodian woman Chan Vanny, 37, also a teacher, was sent to Calmette Hospital. The third victim was identified as Vietnamese-Cambodian man Ming Hov, 38, a vendor at O’Russey Market in Chamkarmon district.

“Our officers are investigating the issue and looking for the perpetrator to bring to justice,” Pou Davy said.

Authorities temporarily shut down the street in the vicinity of the blast, which rattled local residents. One resident of nearby Street 348, who would not give his name, said he came out in the street to find a small crater and a woman bleeding from her back, adding that ambulances arrived after about 10 minutes.

National Police spokesman Kirth Chantharith said he was “monitoring the case” last night. “It is true there was an explosion, but the reason for the explosion and the motive we do not know yet,” he said.

Maing Sokluch, Phnom Penh municipal military police anti-crime office chief, swatted down early reports of an arrest late last night, adding that for the time being, authorities suspect “revenge” may be a motive.