A roadside Hindu shrine next to an army camp in Mannar was destroyed by unknown attackers on Monday night.
The destruction of the Pillaiyaar shrine on the Mannar-Jaffna Highway was discovered by locals on Tuesday morning and reported to police.
The Pillaiyaar shrine had been attacked twice previously and was newly restored.
It is situated beside a Sri Lankan military runway next to the Thallady army camp.
Residents of Nayattruvazhi and Semmanthivu also reported that Hindu shrines in their areas had also been attacked and destroyed on Monday night.
Mannar police have been investigating a spate of hate crimes directed at Tamil religious sites, including Catholic and Hindu shrines, in the past few months.