Why did instagram randomly put pics on my brothers phone?

[AC Question]

So my brother has an lg tribute 5, he doesn't use instagram but in his photos on his phone there was some very very inappropriate pictures of women on his phone in an album named from instagram, now I've heard of a virus thing called silence when I searched this problem up but he doesn't have any downloads we don't know what happened but we would like some help

 

[Tim1954]

I don't think instagram can just send pics to random phones to be honest.
Perhaps he was looking around on line and downloaded those images?
You can delete them, then run an antivirus app to make sure nothing nasty is lurking there..