Bhubaneswar: Intensifying probe into the most horrific train accident in Odisha's Balasore district, the Central Bureau of Investigation (CBI) today will grill three arrested Railway officials in Bhubaneswar.

A five-member CBI team reached Chandaka Police Station on outskirts of Bhubaneswar city for interrogation of the accused persons on second day of their five-day in connection with the train accident that claimed over 290 lives last month.

Sources said that one more railway employee has also been summoned for interrogation in the case. During the five-day remand, the CBI sleuths will investigate the 'conspiracy' that led to triple train mishap near Bahanaga Bazar Railway Station in Balasore district on June 2.

Yesterday, a special CBI court in Bhubaneswar had allowed the investigative agency to take three accused Railway officials on remand for a period of five days for interrogation following their arrest in the train tragedy.

The CBI has arrested Senior Section Engineer (signal) at Balasore Arun Kumar Mahanta, Senior Section Engineer (signal) at Soro Muhammad Amir Khan and Technician at Balasore Pappu Kumar in connection with the Balasore train mishap.

The three officials were arrested under Sections 304 and 201 of the IPC and Section 153 of the Railways Act, CBI sources said.

Earlier, the CBI had raided the rented house of Amir Khan at Soro in Balasore district and sealed it in connection with the mishap. They also picked him from the house for interrogation.

The CBI also had questioned Banahanga Bazar Railway Station Master SP Mohanty during the probe in the incident in which hundreds were killed and over a thousand passengers were injured on the fateful evening of June 2.

The death toll reached 293 so far. At least 288 passengers were killed on the spot after Chennai-bound Coromandel Express hit a stationary goods train after entering the loop line and its derailed carriages then collided with the two rear carriages of the Bengaluru-Howrah Superfast Express, another passenger train passing in the opposite direction on another track near Bahanaga Railway Station.