BNP Secretary General Mirza Fakhrul Islam Alamgir was discharged from a city hospital on Monday around nine hours after being admitted there.

Fakhrul returned to his Uttara residence as doctors at United Hospital discharged him at around 9:30pm after assessing his medical reports and health condition, BNP Media Cell member Sayrul Kabir Khan told UNB.

He said the physicians advised the BNP secretary general to rest at home.

Earlier in the day, the BNP secretary general was admitted to the hospital at about 12:30pm as he fell sick at the party chairperson's Gulshan office.

Fakhrul was taken to the high dependency unit of the cardiology department of the hospital under Professor Muminuzzaman.

Later, he underwent some medical tests and no major complication was detected.

Fakhrul has been suffering from various health complications, including diabetes, hypertension and cardiac problems that worsened during his recent imprisonment.

He returned home on Thursday from Singapore after receiving medical treatment there for a week.

On February 10, Fakhrul and his wife went there for a follow-up checkup and treatment.

The 76-year-old received treatment at Singapore National University Hospital.

On December 9, a team of the Detective Branch (DB) of police picked up Fakhrul and party standing committee member Mirza Abbas from their homes in separate raids in the capital, a day before the party's much-talked about rally in the capital.

He walked out of Dhaka Central Jail in Keraniganj on January 9 and received treatment at Evercare Hospital for two days before going to Singapore.

In 2015, while incarcerated, Fakhrul was diagnosed with a block in the internal carotid artery of his neck.

After his release, he went to Singapore for treatment. Since then, he needs to go to Singapore every year for follow-up treatment.