Denver Post online news producer Daniel Schneider is reporting that two people were shot at Denver’s annual 4/20 pro-pot rally, which is held in the city’s Civic Center Park. Tweets from others at or near the scene seem to confirm a loud noise and some panic, although injuries have not yet been confirmed.

Crowds scattered about 5 p.m. when shots were heard in Denver's Civic Center. As the 420 rally was ending. Approx 80000 people there — Kris (@KennedyKr_is) April 20, 2013

Denver police officer confirms two people shot at or near 420 Rally in Denver via @schneidan at @DenverPost #DenverShooting — Anonymous (@YourAnonNews) April 20, 2013

Gun shots at the 420 rally in downtown Denver 15 minutes ago. Time to go home. — Becca Paige ♡ (@TheBeccaPaige) April 20, 2013

Misfit Politics’ Brandon Morse is on the scene.

Apparently shots of rang out of the 420 rally. Everyone is running. — Brandon Morse (@TheBrandonMorse) April 20, 2013

Cops are everywhere with flashing lights but everyone and everything seems to have calmed down. — Brandon Morse (@TheBrandonMorse) April 20, 2013

Man wheeled away on a stretcher right now. — Brandon Morse (@TheBrandonMorse) April 20, 2013

ALERT: Paramedics say 3 wounded in Denver's Civic Center #420 RALLY: http://t.co/bEctDPubob pic.twitter.com/O7vuOcpdzU — The Denver Post (@denverpost) April 20, 2013

Denver smoke out… Whoever shot those people needs to put down the gun and pick up a blunt. #Relax its #420 pic.twitter.com/vulvcoQrYd — That guy (@IllEyes) April 20, 2013

Gun fire at the #420 rally — Eric Goody (@ejgoody) April 20, 2013

Shots fired and thousands of people started running — Eric Goody (@ejgoody) April 20, 2013

I heard for or five shots. Sounded like they came from the Greek Theater area — Eric Goody (@ejgoody) April 20, 2013

Ambulances and police are all over civic center park. Still determine exactly what happened pic.twitter.com/PCcgPCCJys — Eric Goody (@ejgoody) April 20, 2013

Denver police confirm that one person was shot in the leg.

BREAKING: Shooting at Civic Center Park: One victim shot in the leg, another also down with unknown injuries. Watch here for updates. — Denver Police Dept. (@DenverPolice) April 20, 2013

Witnesses I talked to heard six or seven shots as saw thousands of people running every which way in Civic Center Park. More @denverpost — Sadie Gurman (@sgurman) April 20, 2013

https://twitter.com/JamesHowlett78/status/325753387847139328

Image from scene in Denver where two reported injured after a number of shots fired at a 420 rally pic.twitter.com/FShNxJsyVs v/ @41ActionNews — Jules Mattsson (@julesmattsson) April 20, 2013

PHOTO: Injured victim from todays 420 event in Denver's Civic Center Park. (name withheld), per @Tdavisphojo http://t.co/2OxfhfpwKo — NewsBreaker (@NewsBreaker) April 20, 2013

Masses flee the Denver 420 event at the state capitol pic.twitter.com/wlTzGU992P — Daniel Berman (@bermanphotos) April 20, 2013

This overhead view gives a good idea of the size of the crowd (and the volume of smoke).

View right at 4:20 PM over Civic Center Park. Visible smoke. http://t.co/rwrWGEHEK4 — Cody Crouch (@CodyCrouch) April 20, 2013

@DenverPolice I was there!! It was terrifying! I'm still shaking from it but glad to be on my way home #thankful — SwayShay (@SwayShay) April 20, 2013

@9NEWS @9_to_5_Wook my scene was seeing mobbed of people running traffic stop in all directions! Scary! — SwayShay (@SwayShay) April 20, 2013

Good news from the police: the injuries are said not to be life-threatening.

UPDATE: Civic Ctr Park shooting-1 male & 1 female shot. Both victims shot in leg & suffered non life-threatening inj. DPD PIO is at scene — Denver Police Dept. (@DenverPolice) April 20, 2013

Denver police say both victims in their 20s. Too soon to say what precipitated. Many units investigating. — Sadie Gurman (@sgurman) April 21, 2013

Denver police officer stands watch after #Denver420 shooting. http://t.co/oI06KliXO1 — John Ingold (@johningold) April 21, 2013

Update:

The Denver Post has raw video of the scramble for safety.

RAW VIDEO: 2 people shot during #Denver420 pot rally at Civic Center Park: http://t.co/isJZ7xDM4m via @denverphotos — The Denver Post (@denverpost) April 21, 2013

Police are looking for 2 black males in relation to shooting during #420rally at Civic Center Park.http://t.co/bW8RLC7YHe — 7NEWS Denver Channel (@DenverChannel) April 21, 2013

BREADKING: DPD looking for 2 shtg susps. Susp 1- black male (light complx), 6 ft-180 lbs., wearing gray hoodie, black pants,Caronlina bb cap — Denver Police Dept. (@DenverPolice) April 20, 2013

BREAKING: (cont) Shooting Susp 2 -Black male wearing black and white checkered shirt. — Denver Police Dept. (@DenverPolice) April 20, 2013

Organizers of the event have canceled tomorrow’s scheduled activities.

Correction. City officials say event organizers cancel 4/20 events For Sunday. #420Denver — Jeremy Meyer (@jpmeyerDPost) April 21, 2013

Morse has posted video of the chaos as well.

Some #420 Rally footage and interviews. Footage of the crowd running and some of the victim. http://t.co/D7sQqzxFwb — Brandon Morse (@TheBrandonMorse) April 21, 2013

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Update:

UPDATE: 3rd Civic Center Park shooting victim (juvenile), grazed by bullet, walked into nearby hospital — Denver Police Dept. (@DenverPolice) April 21, 2013

Editor’s note: This post initially referred to Daniel Schneider as a Denver Post photographer. He is a social media and online projects producer for The Denver Post. We apologize for the error.