Security beefed up outside WTC

The police have stepped up security in and around the World Trade Centre at Cuffe Parade after WTC authorities received an e-mail threatening to blow up the twin World Trade Centre (WTC) towers in South Mumbai on Sunday. This is the second such warning in less than a month. The e-mail, sent by a person claiming to be a Nigerian national, reached the security officials who in turn informed the police about it, a senior police official said.