Despite heightened vigil along the India-Bangladesh border, infiltration from the unrest hit country into the northeastern state of India continued with 9 more citizens of the neighbouring country were arrested by the security personnel on Thursday from two different places of Tripura, officials said. 
 A Border Security Force (BSF) spokesman said that six Bangladeshi nationals including a woman and three trans-genders were apprehended in a joint operation of BSF, Government Railway Police (GRP) and Railway Protection Force (RPF) from Jirania Police station.
The Bangladeshi citizens after illegally entering Tripura were trying to board a train to go to other parts of the country via Guwahati. 
The infiltrators, aged 20 years to 54 years, are residents of different districts of Bangladesh. 
In another operation, the BSF apprehend three Bangladeshi nationals including two minors from Samrupara under Unakoti district while they were trying to exfiltrate to their country (Bangladesh). 
All the three Bangladeshi nationals, who earlier came to Tripura illegally, are residents of Maulvibazar of Bangladesh. Senior BSF officials are interrogating the infiltrators.
BSF is maintaining a high level of alertness in the international border to prevent infiltration, the spokesman said.
Over the last three and a half months, over 455 Bangladeshi nationals and over 60 Rohingyas were arrested by the GRP, Border Security Force (BSF), and Tripura Police from the Agartala railway station and various other places in Tripura after they illegally entered India.
After the Bangladesh unrest began in June-July, BSF has enhanced the surveillance along the 4,096-km border with the neighbouring country to prevent trans-border crime and infiltration, the BSF officials said.
Five Indian states – West Bengal (2216 km), Tripura (856 km), Meghalaya (443 km), Mizoram (318 km) and Assam ( 263 km) share a border with Bangladesh.