What aircraft is this?
It seems to me that it is an  Fairchild Republic A-10 Thunderbolt II, commonly know as "Warthog".


(Source: wikipedia)

The "stubs at the front of the wings" are pods in which the main landing gear is stowed after retraction.



If you are in doubt that it was military, it might have been a business jet like the Cessna Citation II / Bravo / Mustang, which has a similar planform albeit without the stubs in front of the wing. 



Using the replay function of Flightradar 24 you may be able to find out which exact aircraft it was. The coverage at low levels is not so good for all aircraft though.