It appears the Seattle Sounders had a restless night’s sleep - and not simply due to the inevitable pre-MLS Cup nerves.

As first spotted by none other than Canadian Premier League chief Paul Beirne, some Toronto FC fans got up to some mischief last night. Residents of the Bremner-York area downtown - near Maple Leaf Square - were awoken by fireworks being set off at 3 a.m. for seemingly no reason at all.

Colourful language follows.

Who the fuck is shooting fireworks at 3am?! I’m wide awake now. #Toronto #YorkAndBremner — Riley . (@rileyxxxx) December 9, 2017

So I'm startled awake by the noise of fireworks going off across the street .... Oh it's 3am !! WTH #3amfireworks the #lowersimcoeandbremner #wakeuptoronto #isthisformybirthday #Imawakenow A post shared by pamandmollydoodles (@pamandmollydoodles) on Dec 9, 2017 at 12:11am PST

Well, it turns out there was a motive.

Staying in the area, at the Delta hotel, is none other than... the Seattle Sounders.

Judging by a rant tweet about fireworks at Bremner and York at 3am...I’m guessing that the Sounders are staying at the Delta and #TFC supporters did their jobs... — Paul Beirne (@Paulbeirne) December 9, 2017

If TFC come out looking like they have a little extra jump in their step this afternoon, you know who to thank.