Luke Bryan's bar is investigated over claims missing Riley Strain may have been overserved alcohol before he was kicked out of the Nashville venue and seen stumbling through streets

Luke Bryan's Tennessee bar is currently being investigated over claims the still-missing college student Riley Strain may have been overserved alcohol before he disappeared.

Strain, 22, was last seen stumbling through the streets on Broadway, Nashville, last Friday after he was kicked out of Luke's 32 Bridge Food + Drink.

Now, an investigation is underway as the bar is alleged to have served too much alcohol to the Missouri college student.

The Tennessee Alcoholic Beverage Commission (TABC) said that while there are no specific rules that govern escorting out drunk customers from their businesses or providing any assistance in getting someone home, state law prohibits serving alcohol to people who are visibly intoxicated.

'A violation is a class A misdemeanor. The TABC has opened an investigation into this matter to see if any violations have occurred,' they added.

Surveillance footage released by the Nashville police show Riley Strain wobbling and appearing confused as he crossed a closed road after being kicked out of Luke's 32 Bridge bar. An investigation is now underway over claims the student was overserved alcohol

Strain, 22, was last seen on Friday night at Luke Bryan's establishment on Broadway wearing a two-toned black and brown shirt and blue jeans

Luke's 32 Bridge is now being investigated over claims the missing student was overserved alcohol the night he went missing. State law prohibits serving alcohol to people who are visibly intoxicated.

Cops made the initial suggestion that Strain may have been overserved on the Friday, when he and his friends hit the town and visited Luke's 32 Bridge.

Strain had been visiting Nashville on a fraternity trip when he was separated from his group after he was booted out of the bar.

He reportedly told his Delta Chi fraternity brothers he would meet them back at their hotel, but was nowhere to be seen when the group returned from their night out. 

His friends tried contacting him, but received no response and at 1:40pm on Saturday, they reported Strain as missing as they failed to locate him via his Snapchat location.

Surveillance footage collected by police from Downtown Smoke & Vape Shop on Church Street showed Strain near the intersection of 2nd Avenue and Church Street.

The seemingly intoxicated student was wearing a two-toned black and brown shirt and blue jeans and took a tumble, then quickly got back up and continued down the street.

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

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 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 

'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,' Strain's stepfather Chris Whiteid said.

The Metropolitan Nashville Police Department and the Office of Emergency Management have been frantically searching the streets, as well as the Cumberland riverbank nearby amid fears he may have fallen into the water.

Police also applied for a warrant to access his phone and Apple Watch data, hoping it would pinpoint his location or at least trace more of his movements.

A private investigation firm hired by Strain's parents is also searching for him.  

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

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

A friend of Strain, Chris Dingman, reportedly found out that his missing pal had been spotted by a group of homeless individuals on the night of his disappearance.

'I was talking to family members currently in downtown Nashville searching, and we have found another homeless person that had acknowledged that Riley had been in that area,' Mr Dingman told WSMV4.

'This now makes two people that have done confirmation. These are areas that the camera had stops. We don't have any footage. 

'Basically, the areas where his phone quit pinging. We now do have visual confirmation from two homeless camps that Riley was in that area,' he added.

Country singer Luke Bryan took to Instagram to share his prayers for Strain's 'safe return'

The Metropolitan Nashville Police Department and the Office of Emergency Management are scouring riverbanks for clues using boats and sonar equipment amid fears he may have fallen into the Cumberland riverbank

The 'Rain Is a Good Thing' singer took to Instagram to speak out on the incident and shared his prayers for Strain's 'safe return' with his 6.8million followers.

He also noted his bar was working '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'.

Nashville PD also provided an update on Thursday regarding their progress on the case.

They explained they were still digging through tips, and reassured they would bring in state or federal help if they required it.

Strain's family has said they're living through a nightmare ordeal as they continue to look for him. 

The student had reportedly FaceTimed his mom earlier in the evening, and she said nothing seemed out of the ordinary, even though she knew he was bar hopping.

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.'

Strain was in Tennessee on a group trip with is fraternity for their annual spring formal when he was kicked out of the bar around 10 p.m. for undisclosed reasons

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 said it had 'been in touch with the family and authorities in Nashville' who were working to find the student.

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

'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.'