Remembered wrong.
As at the time, David ben Gurion was sure it was the British who he claimed were responsible.
{...
In the ensuing confusion, Jewish residents immediately blamed the British for the attack.
David Ben-Gurion, on visiting the site of the carnage, has been cited as putting some responsibility for this Arab attack on the shoulders of Jewish thugs, stating, "I could not forget that our thugs and murderers had opened the way."
[10] The Irgun spread word ordering militants to shoot on sight any Englishman.
[11] By day's end, eight British soldiers had been shot dead, while a ninth was murdered while laid up in a Jewish clinic for treatment of a wound.
[3] Lehi also reacted several days later by blowing up a train full of British soldiers as it drew out of
Rehovot station, killing 27.
[3]
The day after, on 23 February, a Jewish offensive, deploying mortars, was launched against the Arab neighbourhood of
Musrara, in Jerusalem, killing seven Arabs, including an entire family. The Arabs believed it was in revenge for the Ben-Yehuda Street bombing, though, according to Israeli historian Itamar Radai, at the time the Jews and their official institutions blamed only the British for the incident.
[12]
...}
And I see nothing claiming the victims were Jewish.
Since the majority of the citizens of Jerusalem were Arab, it is most likely it was more Arabs killed than Jews.
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