Jeremy Piven has left a cyclist badly injured.

The 50-year-old actor parked his 2015 CTS Cadillac outside Los Angeles shopping centre The Grove on Tuesday (19.07.16) and flung open his car door, striking a 35-year-old man who was peddling along.

According to TMZ, the cyclist's chest was cut open and he was taken to hospital by ambulance, where he subsequently received stitches.

A law enforcement source told the website they believe the incident was Jeremy's fault, but he wasn't issued with a ticket as there were no witnesses, and they did say that the 'Entourage' actor was compliant.

Earlier this year, Jeremy revealed he is still struggling with the effects of mercury poisoning.

The 'Mr. Selfidge' star was contaminated with the toxic metal after eating a lot of sushi prior to 2008 and the serious illness - which can cause death - subsequently forced him to drop out of Broadway show 'Speed-the-Plow'.

But he says he's been undergoing a complicated medical procedure called ''chelating'' ever since, which involves administering a form of acid to the body, which stops arsenic, lead, uranium, plutonium and other forms of toxic metal poisoning in its tracks.

He said: ''I've been chelating my blood for the past eight years. I haven't been 100 percent since then . . . When that was going on, I was unable to function and it was scary as s**t.''

Other extreme side effects of chelating include cancer, neuro-developmental disorder from toxicity, dehydration, low blood calcium and harm to kidneys.