Syrian activists say government troops have ended a year-long siege of Aleppo's main prison.
The Britain-based Syrian Observatory for Human Rights said Syrian forces entered the complex in the key northern city early Thursday, days after launching a push to dislodge opposition fighters.
The rebels surrounding the site had repeatedly attacked the prison hoping to free the detainees being held inside by government forces.
The prison holds about 3,500 prisoners.
More than 150,000 people have been killed in Syria since March 2011 when peaceful protests against President Bashar al-Assad spiraled into a civil war.
In this photo released by the Syrian official news agency SANA, backers of President Bashar al-Assad hold his portrait and wave Syrian flags during a demonstration in support of his candidacy for another term as president, Damascus, Syria, May 23, 2014.
A man puts his belongings in the back of a vehicle at a site hit by what activists said were barrel bombs dropped by forces loyal to President Bashar al-Assad, Baaideen neighborhood, in Aleppo, May 23, 2014.
A woman affected by what activists say was a gas attack, receives treatment inside a makeshift hospital in Kfar Zeita village, in the central province of Hama, May 22, 2014.
Soldiers loyal to President Bashar al-Assad pose for a photo in Aleppo's main prison, May 22, 2014.
Inmates gesture from behind bars in Aleppo's main prison, May 22, 2014.
Smoke rises near the village of Hilan due to shelling by forces loyal to President Bashar al-Assad, May 21, 2014.
Syrian army soldiers loyal to President Bashar al-Assad walk on Hilan Hill. Syrian army reports claim that the smoke rising from a nearby village was a result of shelling by Syrian warplanes, near Aleppo, May 21, 2014.
Syrian army tanks loyal to President Bashar al-Assad advance toward the Handarat camp, near Aleppo, May 21, 2014.
Smoke rises from Handarat camp. Syrian army forces loyal to President Bashar al-Assad claim they are responsible for the shells dropped from their warplanes, near Aleppo, May 21, 2014.
Forces loyal to President Bashar al-Assad advance towards Aleppo Central prison that has been sieged by rebels for over a year, north of Aleppo, May 21, 2014.