NEW : Blast outside Lahore court kills at least 23 people and injuring 58 others . Suicide bomb exploded as lawyers were set to attend protest rally outside high court . A man blew himself up after being stopped by police at a security barrier . the Associated Press of Pakistan said 22 police officers and one passerby were killed . There were reports of a second blast , but these proved to be unfounded .
NEW : Blast outside Lahore court kills at least 23 people and injuring 58 others . Suicide bomb exploded as lawyers were set to attend protest rally outside high court . A man blew himself up after being stopped by police at a security barrier . There were reports of a second blast , but these proved to be unfounded .