Update on June 18:

Ms Phua has returned home after seven days.

Read the full update here: Missing 18-year-old girl returns home after 7 days, had left note: 'I'm not a good child'

Original article:

The police are appealing for information on the whereabouts of an 18-year-old girl who was last seen at Block 308 Yishun Ring Road on Saturday (June 8).

Ms Phua Zhi Jing Grace was last seen at around 9.30pm, said the police in a statement.

Anyone with information is requested to call the police hotline at 1800-255-0000 or submit information online at www.police.gov.sg/iwitness.

All information will be kept strictly confidential.