Bengaluru, Mar 26 (IANS): The National Investigation Agency (NIA) has detained two suspects in connection with the Rameshwaram Cafe blast case in Bengaluru, sources confirmed on Tuesday.

The preliminary probe has revealed that the two suspects were in direct contact with the suspected bomber.

The NIA sleuths have picked up the suspects from an area in the state capital. However, a statement is yet to be made by the NIA in this regard.

Even as the investigating agencies, both NIA and state special wing CCB teams have launched an extensive search operation in various states, the bomber has remained elusive. The authorities had obtained the bomber's images and videos from CCTV footage on March 1, soon after the incident.

Sources said that the sleuths were suspecting that the bomber had come from Tamil Nadu and was staying in a neighbouring state for two months before carrying out the blast.

The hair samples of the accused were gathered from the hat of the accused which he abandoned in Bengaluru near a religious place. The authorities have sent the samples for the DNA testing and were hoping for a breakthrough.

The Rameshwaram Cafe bomb blast took place on March 1 on the International Technology Park Limited (ITPL) road in the Brookfield area. Low-intensity Improvised Explosive Device (IED) was used to carry out the blast and nine persons were injured in the incident.