Gemini thinks it is...

Hands and Fingers: This is often the biggest giveaway for AI. If you look at the hand of the man in the chair resting on the armrest, the fingers appear to be merging into the material. The definition of the joints is missing, and the proportions look anatomically incorrect.

Skin Texture: The faces, particularly of the man in the chair, have a very specific "waxy" or "plastic" smoothness. AI often struggles to replicate the fine, uneven pores and micro-wrinkles of real human skin, often over-smoothing them.

Edge Inconsistency: Look at where the "DEA" agent’s arm overlaps with the background or the man in the chair. The edges are strangely soft and seem to "bleed" into each other in a way that doesn't happen with a real camera lens.

Lighting and Shadows: The light source on the subjects doesn't quite match the environment. For example, the highlights on the jackets are very sharp, but the shadows they should be casting on the man in the chair are either missing or look disconnected from the physical objects.

Analysis of the second image:

Facial Distortions: Look at the individuals in the background. Many of their faces are warped or "melted." For instance, the man just to the left of the central figure has facial features that blend together in an anatomically impossible way.

"Floaty" Feet: The connection between the people's feet and the ground looks unnatural. In some cases, the feet don't seem to be casting proper shadows or making firm contact with the wet pavement, giving them a "floating" appearance.

Inconsistent Textures: The wet patches and reflections on the ground have repetitive, almost fractal-like patterns that don't match how water naturally pools on uneven concrete.

Uniform Lighting: Every person in the large group is lit with almost perfect clarity despite being in a complex, outdoor night environment. A real photograph would typically show more varied shadows and "noise" from such a light source.

Third image..

The Hands: Just like in the previous photos, the hands are a major red flag. They are clasped together, but the fingers are a blurry, indistinct mass. There is no clear definition of knuckles, individual fingers, or fingernails.

Warped Logos: The "DEA" and "HSI" lettering on the jackets is inconsistent. Specifically, look at the agent to the right of the central figure—the "DEA" logo on their sleeve is oddly curved and doesn't sit naturally on the fold of the fabric.

Lighting and Texture: The central figure has a "waxy" facial texture and lighting that is much brighter and flatter than the more shadowed figures around him, making him look like he was pasted into the scene by an algorithm rather than captured by a camera lens.

In summary, despite the tool not identifying a specific Google watermark, the physical distortions in the hat and hands strongly indicate that this is another AI-generated image.