[(Title)] Spanish police find no weapons in knife attacker's home.

MADRID (AP) — Police haven't found any guns or explosives in the house of a man who allegedly attacked police officers with a knife in Barcelona before being shot dead, a senior official in Spain's Catalonia region said Tuesday.

西班牙加泰罗尼亚地区的一位高级官员周二说，一名男子在巴塞罗那用刀袭击警察，然后被枪杀，警察在房子里没有发现任何枪支或炸药。

Authorities are investigating whether the suspect in Monday's attack at the police station on the outskirts of Barcelona had links to terror groups, Catalan Interior Minister Miquel Buch said.

加泰罗尼亚内政部长米奎尔·布克说，当局正在调查周一在巴塞罗那郊区警察局袭击事件的嫌疑人是否与恐怖团体有联系。

He told Catalan public radio that "as things stand" terrorism can't be ruled out as a motive for the attack. Officials haven't identified the dead suspect.

他告诉加泰罗尼亚公共广播电台，不能排除这次袭击来自恐怖主义的可能性。官员们还没有确定死者的身份。

The investigation by police and intelligence services could last weeks, and the motive may not emerge until it's concluded, Buch said in Catalan, according to Spanish news agency Europa Press.

西班牙通讯社表示，警方和情报部门的调查可能持续数周，而且可能直到调查结束，袭击事件的动机也无法确定。

Police were analyzing evidence collected during the house search.

警方正在分析在搜查房屋时收集的证据。

Catalan police chief Andreu Joan Martinez said Tuesday the policewoman who shot the alleged attacker acted in a "proportionate, adequate" way, considering the "extremely serious situation" she faced.

加泰罗尼亚警察局长安德鲁·琼·马丁内斯周二表示，考虑到她所面临的“极其严重的情况”，枪击被指控的袭击者的女警察采取了“相称，充足”的态度。

The policewoman was the first person the attacker approached with a knife after gaining entry to the police station before dawn.

这名女警察是袭击者在黎明前进入警察局后第一个用刀接近的人。

Martinez praised the policewoman and the sergeant near her for their quick response to the threat.

马丁内兹赞扬女警察和靠近她的中士对威胁迅速做出反应。

"That explains why today we're not speaking about greater loss of life," Martinez told a news conference in Barcelona.

马丁内斯在巴塞罗那的新闻发布会上说：“这就解释了为什么我们今天没有谈到更大的生命损失。”

Meanwhile, a spokesman for the Catalan police force's largest labor group, Valentin Anadon, said in an interview with Europa Press that the policewoman told the attacker "about 10 times" to put down his knife before she opened fire.

与此同时，加泰罗尼亚警察部队最大的工兵组织瓦伦丁·阿纳登在接受欧罗巴报社采访时说，女警察告诉袭击者，在她开火之前，要放下刀子“大约十遍”。

Police haven't released any video footage from inside the police station during the attack.

警方没有发布任何来自警察局内部关于这次袭击的视频片段。