Massacre in Iranian Baharestan Square?

From the reliable tweeter "persiankiwi":

# Everybody is under arrest & cant move - Mousavi - Karroubi even rumour Khatami is in house guard - #Iranelection -5 minutes ago from web
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they pull away the dead into trucks - like factory - no human can do this - we beg Allah for save us - #Iranelection10 minutes ago from web
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Lalezar Sq is same as Baharestan - unbelevable - ppls murdered everywhere - #Iranelection14 minutes ago from web
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they catch ppl with mobile - so many killed today - so many injured - Allah Akbar - they take one of us - #Iranelection15 minutes ago from web
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in Baharestan we saw militia with axe choping ppl like meat - blood everywhere - like butcher - Allah Akbar - #Iranelection RT RT RT17 minutes ago from web
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reports of street fighting in Vanak Sq, Tajrish sq, Azadi Sq - now - #Iranelection - Sea of Green - Allah Akbar19 minutes ago from web
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ppl run into alleys and militia standing there waiting - from 2 sides they attack ppl in middle of alleys #Iranelectionabout 2 hours ago from web
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so many ppl arrested - young & old - they take ppl away - #Iranelection - we lose our groupabout 2 hours ago from web
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saw 7/8 militia beating one woman with baton on ground - she had no defense nothing - #Iranelection sure that she is deadabout 2 hours ago from web
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they were waiting for us - they all have guns and riot uniforms - it was like a mouse trap - ppl being shot like animals #Iranelectionabout 2 hours ago from web
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I see many ppl with broken arms/legs/heads - blood everywhere - pepper gas like war - #Iranelectionabout 2 hours ago from web
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just in from Baharestan Sq - situation today is terrible - they beat the ppls like animals - #Iranelection RT RT RTabout 2 hours ago from web

This is entirely unconfirmed. But if true, it speaks to the desperation of the regime. If they're willing to go to this extent post-Neda, the situation must be incredibly, incredibly dire for them. They need control and need it now.

Edit: Here's Sully:

That's the impression from several reports now coming in. Stay tuned. From an interview on CNN:

"I was going towards Baharestan with my friend. This was everyone, not just supporters of one candidate or another. All of my friends, they were going to Baharestan to express our opposition to these killings and demanding freedom. The black-clad police stopped everyone. They emptied the buses that were taking people there and let the private cars go on. We went on until Ferdowsi then all of a sudden some 500 people with clubs came out of [undecipherable] mosque and they started beating everyone. They tried to beat everyone on [undecipherable] bridge and throwing them off of the bridge. And everyone also on the sidewalks. They beat a woman so savagely that she was drenched in blood and her husband, he fainted. They were beating people like hell. It was a massacre. They were trying to beat people so they would die. they were cursing and saying very bad words to everyone. This was exactly a massacre... I don't know how to describe it."

Intolerable.