Mystery deepens as missing student Riley Strain's bank card is found in Tennessee river 9 days after he vanished - as desperate search for 22-year-old continues

Police have found a bank card near a Nashville river in their desperate search for missing University of Missouri student Riley Strain, who vanished nine days ago. 

Strain, 22, was last seen on March 8 at Luke's 32 Bridge Food + Drink on Broadway, which is owned by country superstar Luke Bryan, according to the Metropolitan Nashville Police Department. 

The Delta Chi fraternity member was in Tennessee on a group trip for their annual spring formal when he was kicked out of the bar around 10 p.m. for unknown reasons.

Nashville Metro Police said Thursday that they were utilizing a boat to continue their search along the Cumberland River.

On Sunday, they confirmed that a bank card belonging to Strain was found on the embankment near Gay Street, which is a three minute walk from the Downtown Smoke & Vape Shop on Church Street where he was last seen on video.

Police discovered a bank card near a Nashville river in their desperate search for missing University of Missouri student Riley Strain, who has not been seen in nine days

Nashville Metro Police said Thursday that they were utilizing a boat to continue their search along the Cumberland River

Authorities said at a media availability Sunday that the search for the 22-year-old continues. 

On Wednesday, video obtained by WKRN showed Strain near the intersection of 2nd Avenue and Church Street.

He is seen wearing a two-toned black and brown shirt and blue jeans taking a tumble then quickly getting back up and continuing down the street.

Another camera caught near the intersection of Gay Street and 1st Avenue North just before 10 p.m. taking large strides with his head down as he stumbled through the streets.

'We feel like when he came out, because they had been to a couple of other places, that he had got turned around on the direction,' said Strain's stepfather Chris Whiteid.

Additional surveillance footage released by the Nashville police show him wobbling and appearing confused as he crossed a closed road near the water. 

The next morning, his fraternity brothers tried to find Strain using his Snapchat location but were unsuccessful and called police to report him missing.

His last cellphone location was recorded between Gay Street and James Robertson Parkway close to the bar where he was last seen. 

New surveillance video shows missing University of Missouri student Riley Strain falling as he walked the streets of Nashville

Video from Downtown Smoke & Vape Shop on Church Street showed Strain near the intersection of 2nd Avenue and Church Street

Riley Strain, 22, was last seen on Friday night at Luke's 32 Bridge Food + Drink on Broadway wearing a two-toned black and brown shirt and blue jeans

A view of the river as Metro Nashville Police searched for Riley Strain

Crews search near the Cumberland River in Nashville for missing student Riley Strain

Authorities said at a media availability Sunday that the search for the 22-year-old continues

Police have attempted to locate his phone but have drawn a blank, while also checking local hospitals and jails.  

They conducted a helicopter search on Tuesday to scour the downtown Nashville area, including the Cumberland River. 

His mother Michelle Whiteid said he's 'a great kid' and normally 'very communicative'.

'We miss him and we want him back so bad,' she told WKRN.

'He's always texting me, calling me, FaceTiming me,' she added. 'He's always in touch with me. He's very communicative.'

Country singer Luke Bryan, one of the owners of the bar, said on Instagram, 'Y'all this is scary. Praying for his safe return.'

TC Restaurant Group, the operator and another owner of the bar, said they are 'continuing to work closely with the Metro Nashville Police Department to provide security camera footage and any other potentially helpful information to aid in the search for Riley Strain.'

'Our thoughts are with his family and loved ones for his safe return.' 

Police have attempted to locate his phone but have drawn a blank, while also checking local hospitals and jails

Another camera caught near the intersection of Gay Street and 1st Avenue North just before 10 p.m. taking large strides with his head down

Surveillance footage released by the Nashville police show him wobbling and appearing confused as he crossed a closed road near the water

In an appeal for information about Riley's whereabouts, Nashville Metro PD described him as '6'6', 165 lbs. with blonde hair and brown eyes.'

Anyone with information is asked to call police on 615-862-8600.

The University of Missouri has released a statement saying they've 'been in touch with the family and authorities in Nashville' who are working to find the student.

'The safety of our community is our highest priority,' said Angela King Taylor, interim vice chancellor for Student Affairs.

'Our thoughts are with Riley's family as the search continues. We will be offering any support to them that we can, and we encourage anyone who needs help to reach out to our counseling resources.'