Brockman was involved in a traffic accident in Geraldton, 420km north of Perth, early on Saturday morning.
The 21-year-old attended a family funeral on Friday afternoon.
West Coast say no other vehicle was involved, and no one was injured.
"This matter is being investigated by the WA Police and Tyler is fully co-operating," West Coast said in a statement.
"Tyler's personal circumstances are complex, and the club will prioritise his health and wellbeing ahead of any return to playing football.
"The club has informed the AFL regarding this incident, and we await the outcome of the police investigation before making any further comment."
Brockman played 26 games for Hawthorn before being traded to West Coast at the end of last year.
The small forward was goalless across his first six games for the Eagles before being omitted for last week's six-point loss to Essendon.
Tyler Brockman looks to hit the scoreboard against the Bulldogs in round three. (Morgan Hancock/AAP PHOTOS)
West Coast are nursing a number of injury concerns leading into Sunday's clash with Collingwood at Marvel Stadium.
In-form forward Jake Waterman will miss the match with concussion, while gun midfielder Elliot Yeo is also expected to spend a stint on the sidelines after injuring his groin.
Coach Adam Simpson said on Monday night that they are awaiting scans on Yeo, but it is not a recurrence of the star's osteitis pubis.
"It's more of a pulled muscle, so we're hoping it's just a one-to-two-week injury," Simpson told Fox Footy.
Second-year forward Noah Long is also awaiting the results of scans after his knee twisted awkwardly in a tackle on the weekend.
There's a chance Long damaged his anterior cruciate ligament.
"We hope for the best, but fear the worst," Simpson said.
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