Ibrahimovic has not played since suffering a career-threatening knee ligament injury in United's Europa League quarter-final second leg match against Anderlecht at Old Trafford in April.
Local media reported that one reason for Wednesday's search was related to a federal probe of leaks of grand jury testimony.
The California laboratory said that no "positive test" results for steroids or other performance-enhancing drugs were found at the lab.
Juventus coach Massimiliano Allegri shunned the plaudits after his side move closer to the treble by beating AS Monaco to reach the Champions League final on Tuesday.
The Indian captain will miss the fourth and final Test against Australia after failing to recover from a groin injury.
Later on Monday, Lukaku's brace helped Inter to a win over Napoli, taking them atop the standings on goal difference from Juventus.
Italy goalkeeper Gianluigi Buffon denied that Friday's Euro 2016 opponents Sweden are a one-man team but says they are wary of "superstar" forward Zlatan Ibrahimovic. Buffon shone alongside defenders Andrea Barzagli, Giorgio Chiellini and Leonardo Bonucci as Italy beat Belgium 2-0 in their Group E opener, but the quartet now face the ominous prospect of subduing Ibrahimovic in Toulouse.
Serie A witnessed some breath-taking football action, especially when AC Milan could not convert the umpteen chances they had against Sassuolo while Inter went to top. In Ligue 1 action, all the star players found the net for PSG. Here are images from the soccer matches played across Europe on Sunday.
The English Premier League boasts some of the top managers in the game but to see the best players in the world you have to watch Spanish soccer, Barcelona president Josep Bartomeu said.
Manchester City failed to fire in a frustrating 0-0 home draw with StokeCity on Wednesday that dealt a damaging blow to their Premier League title hopes and left them 10 points adrift of leaders Chelsea.
"US has continued to be concerned with the violence in Kashmir and Powell spoke about it on Thursday to Musharraf," State Department spokesman Richard Boucher said.
The former beat Air India while the latter got the better of Bharat Petroleum in the semi-finals of the Shastri hockey tournament.\n\n
Chinese experts have also claimed a major breakthrough in locating the cause of the syndrome.
South Asia is expected to log an economic growth of 6.9% in 2003-04, which would further go up to 7.2% in the next fiscal, making the region the second-fastest growing in the world after China, economic think-tank RIS said.
Share your thoughts on the PM's contribution to the change in India's outlook.
News of all that's transpired on and off the football field
The Indian skipper believes his team would come up with a better performance in the one-day series.
A round of Wednesday night's Champions League group stage matches.
Images from the English Premier League matches played on Saturday
Spain boss Vicente del Bosque is not expecting a repeat of their crushing 4-0 victory over Italy in the final four years ago when the two sides meet in the last 16 of Euro 2016 on Monday. Spain destroyed the Italians in one of the most one-sided finals in the competition's history at Euro 2012 to clinch their second consecutive European title and reaffirm their status as the world's then dominant side.
Diego Costa scored twice but could not prevent Chelsea losing their 100 percent Premier League record in a controversial 2-2 draw at Swansea on Sunday.
A summary of sports events and sports persons, who made news on Monday.
Champions Chelsea have not enjoyed the best of starts at home this season and face their biggest test yet on Saturday with the visit of free-scoring leaders Manchester City.
