Who Killed Harry?

Harry's breathing was laboured as he lay dying in the alley. From the corner of his eye he spotted a stream of blood mixing with the puddles on the cold alley floor. The rain was erupting from the sky, his brown curly locks were stuck to the sides of his pale face. Tears streamed from his emerald green eyes as they slowly began to close. Harry whimpered and random babbling silently spewed from his ice blue lips.

The alley was pitch black and nobody could see that he was there. The most painful thing of all was the fact he could see people meters from him and that every time he tried to yell for help, the lowest whisper left his lips. Helplessness was the purest form of suffering. Everything felt cold and he felt distant from the world around him. He had lost the ability to open eyes as he tumbled deeper into his pit of darkness.

Everything began to change, there was a subtle but quick transition between darkness and light. His laboured breathing ceased. His pounding heart gave it's final beats. His mind was clear and he felt somewhat tranquil as he slipped from life to death. His battered lifeless body lay unaided and hidden by the shroud of darkness produced by the alley, where his life was tragically cut short.

Harry Edward Milward Styles was dead. And it was certainly no accident. He had been murdered. But by whom?

Notes

Ok everyone :)
this chapters quite short it's only because I didn't want to add anything else to the scene. Harry Styles dying is eventful enough was one chapter, right?