Crowds have been pictured on Swansea Promenade following reports of anti-social behaviour leaving locals feeling "frightened" and "threatened".
Pedestrians on Marine Walk, near the observatory, have even claimed that there were "over one hundred youths" at one point on March 1.
Images show large crowds gathered together, despite Alert Level 4 coronavirus restrictions remaining in place.
Current rules state that people must stay at home, except for very limited purposes.
One woman walking with her child said she was very frightened and felt threatened by the anti-social behaviour.
She claimed that a fight had broken out and youths were "throwing glass bottles", although South Wales Police said that they did not receive any reports of assault.
One resident in the area, who asked not to be named, said that several residents have relayed their concerns that they feel "unsafe in their own homes".
A spokeswoman for the police force said: "We received reports of anti-social behaviour and group of around 30 youths gathering along the seafront yesterday evening.
"Upon attendance the youths dispersed. We will be increasing patrols in the area and would like to remind everyone that anti-social behaviour will not be tolerated and that Covid-19 legislation is in place to keep us all safe. Anyone who witnesses anti-social behaviour should call us on 101."
This is the second incident of anti-social behaviour reported in the space of a few days.
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On Sunday, youths were allegedly ripping up plants, setting fires and smashing glass bottles at the sand dunes in Swansea.
In 2019, residents spoke out about gangs of youths and how they have had to deal with threats, with the situation leaving some people wanting to leave.
During the first weekend of sunshine this year, one resident claims that the anti-social behaviour, near the observatory, has returned.
Facebook group MQRA - Maritime Quarter Residents Association, posted on the social media site about the incident, which they say took place on Sunday, February 28.
With infection rates at their lowest levels since September, the rules were eased slightly from February 20 to allow as many as four people from two different homes to meet for socially-distanced, local exercise.
But First Minister Mark Drakeford has stressed the change "does not mean you can now drive somewhere to exercise and it does not mean socialising".