Help- what is this?

[Squeegle]

I got some sunflower seeds.
This came up with them. It's obviously not a sunflower but I have no idea what it is !

The little clumps of berries are ripening black, not sure if you can see them,
Thanks for your help,
Th

I can't see it properly on the phone but it looks a lot like belladonna, which is extremely poisonous.

Flower colour isn't right for belladonna, but still looks like a solanum.

Eastern black nightshade, is my guess.

Thank you, I have looked it up, you are absolutely right! How strange. I better be careful though, don't want anyone to eat the berries