FBI懷疑波士頓爆炸案的炸彈或爲高壓鍋製成

The FBI says the two bombs that exploded Monday at the Boston Marathon were carried in a dark-colored bag, and possibly consisted of pressure cookers packed with nails and ball bearings.

FBI examiners are looking at fragments recovered from the scene, as they try to piece together how the attack happened.

Authorities do not have any suspects, and are asking the public to send in any photos or videos taken along the marathon route to help find who was responsible.

VOA correspondent Carolyn Presutti, reporting in Boston, says police are also asking people to call in any possible tips.

Police and firefighters unions in Boston have offered a $50,000 reward for information leading to an arrest.

The FBI agent in charge of the case says investigators will "go to the ends of the Earth" to identify who carried out the bombings.

Maryland Congressman Dutch Ruppersberger said after a security briefing Tuesday it is not likely that al-Qaida or any foreign government was involved because of the lack of prior intelligence.

Two blasts seconds apart killed three people at the finish line of the Boston Marathon, including an 8-year-old boy. One-hundred-76 people were injured. A number of them lost limbs.美國聯邦調查局說，在星期一波士頓馬拉松賽中爆炸的兩枚炸彈是藏在一個深色包裏，炸彈可能是用藏有釘子和滾珠的高壓鍋製成。

聯邦調查局人員正在檢查在爆炸現場找到的碎片，希望能彙集線索，以判斷襲擊發生時的情況。

有關當局目前還沒有發現任何嫌疑人，要求公衆送交在馬拉松賽沿途拍攝的任何照片和錄像，協助查找肇事者。

美國之音記者普雷蘇蒂在波士頓報道說，警方還要求民衆提供任何可能的線索。

波士頓警方和消防隊員工會懸賞5萬美元，尋求有助於抓獲肇事者的信息。

負責這一案件的聯邦調查局特工說，調查人員即使“走遍天涯海角”，也要找到這起爆炸案的製造者。
　
馬里蘭州國會議員魯斯伯格星期二在聽完一個安全簡報會後說，由於案發前沒有有關情報，目前看來不大可能是基地組織或其他外國政府介入了這起爆炸案。
　
幾秒鐘內在波士頓馬拉松賽終點線上接連發生的兩起爆炸造成3人死亡，其中包括一名8歲男孩。 另外有176人受傷，一些人的手臂或腿被炸斷。