Who killed Roland Jaquard and why?

Hint 1 of 7:

You should notice that the securities in Jaquard's house were not stolen,
so this embezzlement scheme probably has nothing to do with his murder.

Hint 2 of 7:

Jaquard was quite the womanizer.

Hint 3 of 7:

He also put up quite a fight before he died.

Hint 4 of 7:

The person who killed him probably would show the signs of a fight.

Hint 5 of 7:

Letitia Garcia had a few other "suitors."

Hint 6 of 7:

One of them was Marco Escobedo.  He's the murderer.