In court, Tan was expressionless when the charge was read out in English.
Tan is accused of stabbing Tuppani at a coffeeshop along Boon Tat Street on Monday (10 Jul), then preventing passers-by from helping him.
He allegedly told one person who tried to help that “He’s my son-in-law, let him die”.
Tuppani was rushed to hospital but died from his wounds.
He died exactly a week before he was to celebrate his 13th anniversary.
His wife, Tan Cheng Cheng, has called for privacy.
The 43-year-old said in a statement:
“This is a double tragedy for the family. Our family has lost a loved one and my beloved father is facing a serious charge. You cannot imagine our immense grief, but please try to understand and let us have some peace.”
Tuppani leaves behind 2 daughters, aged 6 and 10, and an 8-year-old son.
This marriage is Tuppani’s second marriage.
He had registered another marriage in 2000.
The CEO of shipping firm TNS Ocean Lines has been hailed as an entrepreneur with sharp business acumen.
He reportedly lifted the business out of the red during the 2007-2008 economic crisis in 18 months, and helped the company reach a turnover of S$100 million in 2014.
In 2014, he was a finalist of the Outstanding Entrepreneur Award at the SICCI-DBS Singapore Indian Entrepreneur Awards.