David Gail‘s sudden demise is below investigation … and cops inform us they’re trying into the potential of a deadly drug overdose.

Legislation enforcement tells TMZ … no foul play is suspected in David’s case however police are ready for toxicology exams to find out an official reason for demise. With that mentioned, we’re instructed an OD is what police suspect would possibly’ve gone down right here. No phrase on what kind of gear are on cops’ radar simply but.

As we reported … David’s sister, Katie Colmenares, introduced his demise Saturday in a social media submit — leaving a candy and touching remembrance in confirming his passing.

His sibling didn’t give a reason for demise for her brother — however did say she would “maintain you so tight daily in my coronary heart.” She additionally mentioned she’ll miss David “each second of daily without end.”

Bear in mind … David famously appeared in 7 episodes of ‘BH: 90210’ as Stuart Carson, the fiancé of Shannen Doherty‘s character. DG was additionally massive within the cleaning soap opera world … he is in 216 episodes of the “Normal Hospital” spin-off “Port Charles.”

His different performing credit embody … “Matlock,” “Homicide, She Wrote,” “The Spherical Desk,” “Doogie Howser, M.D.,” “Excellent Opposites” and “Rising Pains.” On the massive display, David starred alongside Bradley Cooper within the 2002 rom-com “Bending All The Guidelines.”

David was solely 58.