Six people have been injured in a stabbing attack at Jerusalem's gay pride march, according to police.
Emergency services say that two of the victims are in "serious" condition.
The stabber - who was arrested at the scene - has been identified as Yishai Shlissel, the man who was jailed for stabbing three people at the same march in 2005.
Shlissel had only been released from jail a few weeks ago, after serving the majority of his term.
Several thousand participants at the 13th annual Jerusalem Pride Parade were marching along Keren Hayesod Street when the knifeman apparently broke through a police cordon to attack them.
The annual gay pride march through Jerusalem has been the source of heated controversy, due to the city's holy status to Jews, Christians and Muslims.
Since the 1990s, gay activist groups have held an annual mega-parade in the largely-secular Tel Aviv. However, in 2002 they began holding a smaller, far more contentious march through Jerusalem, amid bitter opposition from the city's largely traditional and religious residents.
Unlike the Tel Aviv event, the Jerusalem march is usually met with loud counter-protests. In 2005 tensions boiled over when a haredi extremist stabbed three participants before being arrested by police.
In recent years, however, protests have been smaller as some haredi leaders urged their followers to stay away from what they term the "abomination parade" altogether.