Two senior police officers, including a former Chattogram Metropolitan Police commissioner, were arrested yesterday in connection with cases filed over the July uprising.

The arrestees are former CMP commissioner Saiful Islam and Rajan Kumar Saha, former assistant commissioner of Dhaka Metropolitan Police (Badda zone).

Meanwhile, the Detective Branch of police detained Tanvir Salehin Emon, superintendent of police at Sardah Police Academy in Rajshahi.

Saiful was arrested in Dhaka and brought back to Chattogram yesterday afternoon.

He was then presented before the court of Metropolitan Magistrate Mohammad Mostafa with a 7-day remand prayer in a case filed over the murder of a Chittagong University student during the July uprising

The court allowed police to interrogate him at the jail gate for three days.

CMP Commissioner Hasib Aziz told The Daily Star, "He [Saiful] was arrested in Dhaka based on a specific allegation in connection with a murder case."

Following the hearing, Saiful, wearing a black mask and white helmet, was taken aboard a black microbus under tight security.

As a Bangladesh Civil Services officer from the 20th batch, Saiful previously served as the deputy inspector general of Metro Rail (MRT) Police in Dhaka.

He is accused of involvement in the murder of Hridoy Chandra Tarua, a third-year history student at CU.

Hridoy was shot in the back during a protest at Chattogram's Bahaddarhat on July 18 and died from his injuries at Dhaka Medical College Hospital five days later.

Meanwhile, a DB team from Dhaka detained SP Tanvir Salehin Emon from Sardah Police Academy around 10:30am. However, the reason for his detention remains undisclosed.

Emon joined the police force in 2010 as part of the 28th BCS cadre. Before his post at Sardah, he served as deputy commissioner at DMP.

His father Md Iqbal was a freedom fighter and former general secretary of the Karimganj upazila Awami League in Kishoreganj.

Rajon Kumar Saha, former assistant commissioner of DMP (Badda zone), was also arrested yesterday for his alleged involvement in crimes against humanity in the capital's Rampura during the July uprising.

Gazi Monawar Hossain Tamim, a prosecutor at the International Crimes Tribunal, confirmed the arrest but did not disclose further details.

On February 8, five police officers, including DIG Molla Nazrul Islam, were arrested in various locations in the country.