Almost five months after the death of pensioner Indra Gangabissoon, police are unable to find the intruders who terrorised and beat her to death.
Gangabissoon's family has offered a cash reward for any information on the men.
Police have produced an artist's impression of someone who may be able to assist in their investigation. But no suspects have been detained.
Crime Stoppers has published an advertisement offering a cash reward of $50,000 for any information that can lead to the arrest and conviction of the person or persons responsible for Gangabissoon's murder.
Gangabissoon, 78, a mother of six, died at hospital on April 14 from massive head injuries two days after she was bludgeoned by a thief or thieves who stole her pension money.
She suffered a fractured skull, broken jaw, and her eyes were swollen shut. Gangabissoon's husband, Sugrim, 93, who was also beaten on his head, said he was too feeble to assist his wife.
Sugrim, an academic scholar who has authored six books, written numerous essays on Hinduism and taught Sanskrit, has lost his memory and is unable to recall the attack. Doctors said he may never fully regain his memory.
The attack took place at the elderly couple's home at Southern Main Road, Carapichaima, on the day of their 59th wedding anniversary.
Anyone with information can contact Crime Stoppers at 800-TIPS.