21.   It was unclear whether the attack was related to recent unrest over U.S.-led airstrikes on Afghanistan.

22.   It was unclear whether the two attacks were related.

23.   Jarvis and Greenwood said that they did not believe the airport attack was directly related to the prisoner flight.

24.   Jarvis and Greenwood said that they did not believe the attack was directly related to the prisoner flight.

25.   Lightfoot said authorities are investigating whether the attack is related to two earlier attacks at a Jewish synagogue in neighboring Reno.

26.   Moskowitz denied he was fomenting discord in Israel, and noted that the recent terrorist attacks were not related to his efforts.

27.   Ms. Bridges said it is unclear whether the attacks are related.

28.   Myasnikova said she doubted the two attacks were related.

29.   No other details were available, and it was not immediately clear if the attack was related to the U.S. missile strikes on eastern Afghanistan Thursday.

30.   No other details were available, and it was not immediately clear if the attack was related to the U.S. missile strikes on Thursday.