Zhang Xiu Chun had joined Good Luck Friends Centre, a matchmaking agency at Parklane Shopping Mall, in February 2012.

She later withdrew her membership and was refunded part of her membership fees the following month.

On May 11, 2013, Zhang used a 34cm-long hammer to break a number-code padlock hanging on her flat's side door. She then kept the hammer in her handbag before leaving the Choa Chu Kang flat that afternoon.

Afterwards, Zhang became angry thinking about how the owner of the matchmaking agency had convinced her to sign up. She felt she had been cheated of her money.

At 3.50pm the same day, Zhang stormed into the agency's office. She brandished the hammer at the owner and swung it, damaging $880 worth of office items, including a table, court papers revealed.