The forces launched a major push last month to oust the Islamic State group from west Mosul, taking back a series of neighbourhoods as well as sites including the city's airport, the Mosul museum and the provincial government headquarters.
Some, including the museum, which was vandalised by IS, have been heavily damaged, and it will likely be a long time before trains are again plying the rails to and from Mosul.
Lieutenant General Raed Shakir Jawdat, the commander of the federal police, said that his forces have retaken the train station as well as a nearby bus station, both of which are located southwest of Mosul's Old City.
The station was the "main corridor from the north to the south and carries goods from Turkey and Syria to Baghdad and Basra", Salam Jabr Saloom, the director general of Iraq's state-owned railway company, told AFP.
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Because of its importance, the station was "exposed to many terrorist attacks before the entry of Daesh", Saloom said, using an Arabic acronym for IS.
"But it stopped after the Daesh attack on Mosul," Mohsen said, referring to an IS offensive that overran the city and swathes of other territory north and west of Baghdad in 2014.
Trains once carried passengers to and from Mosul as well, but have not done so since the overthrow of Saddam Hussein's regime by US-led forces in 2003, he said.
Iraqi forces are operating on the edge of the Old City, a warren of narrow streets and closely spaced buildings where hundreds of thousands of people may still reside.
Tens of thousands of people have streamed out of west Mosul to camps around the city since the battle for the area began.
Security forces are searching for jihadists trying to sneak out of the city among civilians, and according to Human Rights Watch, are holding more than 1,200 men and boys suspected of IS ties in "horrendous conditions" at sites south of Mosul.
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