The envelope was delivered to the Church of Our Saviour in Margaret Drive just over a week ago.

Staff members who opened the envelope found light brown granules inside and immediately called the police, said a church spokesman.

A Singapore Civil Defence Force (SCDF) spokesman told The Straits Times that hazardous material (Hazmat) specialists were called in to examine the contents, which were later found to be non-hazardous.

The Anglican church had been in the news recently as a result of the leadership dispute in the Association of Women for Action and Research (Aware).

During the saga, it was revealed that six members who took over the organisation's executive committee after a shock election result on March 28 attended the church, which is known to take a strong stand on homosexuality.

The church spokesman said of the incident: 'We were concerned but never alarmed.'

The incident came on the back of a similar one on April 14 - a day before DBS Bank executive Josie Lau, 48, was appointed the new president of Aware.

That day, an envelope landed in the mailbox of the organisation's office in Dover Crescent.

Read the full story in Saturday's edition of The Straits Times.